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Firefox crashes after MacOS Sierra update

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  • 2 have this problem
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  • Last reply by haguen1

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I just updated to Mac OS Sierra 10.13.2 and get a constant "Gah. Your tab just crashed" error message. Chrome seems to work OK.

Crash report:

E10SCohort=test ContentSandboxLevel=3 AdapterVendorID=0x8086 TelemetryEnvironment={"build":{"applicationId":"{ec8030f7-c20a-464f-9b0e-13a3a9e97384}","applicationName":"Firefox","architecture":"x86-64","buildId":"20171206182557","version":"57.0.2","vendor":"Mozilla","platformVersion":"57.0.2","xpcomAbi":"x86_64-gcc3","hotfixVersion":"20170302.01","updaterAvailable":true},"partner":{"distributionId":null,"distributionVersion":null,"partnerId":null,"distributor":null,"distributorChannel":null,"partnerNames":[]},"system":{"memoryMB":8192,"virtualMaxMB":null,"cpu":{"count":4,"cores":2,"vendor":"GenuineIntel","family":6,"model":69,"stepping":1,"l2cacheKB":256,"l3cacheKB":4096,"speedMHz":1700,"extensions":["hasMMX","hasSSE","hasSSE2","hasSSE3","hasSSSE3","hasSSE4_1","hasSSE4_2","hasAVX","hasAVX2","hasAES"]},"os":{"name":"Darwin","version":"17.3.0","locale":"en-GB"},"hdd":{"profile":{"model":null,"revision":null},"binary":{"model":null,"revision":null},"system":{"model":null,"revision":null}},"gfx":{"D2DEnabled":null,"DWriteEnabled":null,"ContentBackend":"Skia","adapters":[{"description":null,"vendorID":"0x8086","deviceID":"0x0a26","subsysID":null,"RAM":null,"driver":null,"driverVersion":null,"driverDate":null,"GPUActive":true}],"monitors":[{"screenWidth":1440,"screenHeight":900,"scale":1}],"features":{"compositor":"basic","gpuProcess":{"status":"unused"}}},"appleModelId":"MacBookAir6,2"},"settings":{"attribution":{},"blocklistEnabled":true,"e10sEnabled":true,"e10sMultiProcesses":1,"e10sCohort":"test","telemetryEnabled":false,"locale":"en-US","update":{"channel":"release","enabled":true,"autoDownload":true},"userPrefs":{"browser.cache.disk.capacity":358400,"browser.newtabpage.enabled":false,"browser.newtabpage.enhanced":false,"browser.search.region":"CH","browser.search.widget.inNavBar":true,"browser.startup.homepage":"<user-set>","browser.urlbar.suggest.searches":false,"browser.urlbar.userMadeSearchSuggestionsChoice":true,"dom.max_script_run_time":40,"layers.acceleration.disabled":true,"network.proxy.http":"<user-set>"},"sandbox":{"effectiveContentProcessLevel":3},"addonCompatibilityCheckEnabled":true,"isDefaultBrowser":true,"defaultSearchEngine":"ddg","defaultSearchEngineData":{"name":"DuckDuckGo","loadPath":"jar:[app]/omni.ja!browser/ddg.xml","origin":"default","submissionURL":"https://duckduckgo.com/?q=&t=ffsb"},"searchCohort":"nov17-1"},"profile":{"creationDate":16401,"resetDate":16848},"experiments":{"e10sCohort":{"branch":"test"},"searchCohort":{"branch":"nov17-1"}},"addons":{"activeAddons":{"e10srollout@mozilla.org":{"version":"3.05","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":"Staged rollout of Firefox multi-process feature.","name":"Multi-process staged rollout","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":16918},"firefox@getpocket.com":{"version":"1.0.5","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":"When you find something you want to view later, put it in Pocket.","name":"Pocket","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":16918},"webcompat@mozilla.org":{"version":"1.1","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":"Urgent post-release fixes for web compatibility.","name":"Web Compat","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17065},"aushelper@mozilla.org":{"version":"2.0","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":"Sets value(s) in the update url based on custom checks.","name":"Application Update Service Helper","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17123},"screenshots@mozilla.org":{"version":"19.2.0","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":null,"name":"Firefox Screenshots","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17331},"followonsearch@mozilla.com":{"version":"0.9.6","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":null,"name":"Follow-on Search Telemetry","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17386},"shield-recipe-client@mozilla.org":{"version":"76.1","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":"Client to download and run recipes for SHIELD, Heartbeat, etc.","name":"Shield Recipe Client","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17386},"activity-stream@mozilla.org":{"version":"2017.11.07.1100-7f4e3634","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":"A rich visual history feed and a reimagined home page make it easier than ever to find exactly what ","name":"Activity Stream","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17438},"formautofill@mozilla.org":{"version":"1.0","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":"Autofill forms with saved profiles","name":"Form Autofill","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17438},"onboarding@mozilla.org":{"version":"1.0","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":"Photon onboarding","name":"Photon onboarding","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17438}},"theme":{"id":"{972ce4c6-7e08-4474-a285-3208198ce6fd}","blocklisted":false,"description":"The default theme.","name":"Default","userDisabled":false,"appDisabled":false,"version":"57.0.2","scope":4,"foreignInstall":false,"hasBinaryComponents":false,"installDay":16808,"updateDay":17506},"activePlugins":[{"name":"Shockwave Flash","version":"27.0.0.187","description":"Shockwave Flash 27.0 r0","blocklisted":false,"disabled":false,"clicktoplay":true,"mimeTypes":["application/x-shockwave-flash","application/futuresplash"],"updateDay":17485}],"activeGMPlugins":{"gmp-gmpopenh264":{"version":"1.7.1","userDisabled":false,"applyBackgroundUpdates":1},"gmp-widevinecdm":{"version":"1.4.8.1008","userDisabled":false,"applyBackgroundUpdates":1}},"activeExperiment":{},"persona":null}} EMCheckCompatibility=true ProductName=Firefox TelemetryClientId= Vendor=Mozilla InstallTime=1512821395 Theme=classic/1.0 ReleaseChannel=release Notes=AdapterVendorID: 0x8086, AdapterDeviceID: 0x0a26FP(D00-L1100-W00000000-T010) WR? WR- GL Context? GL Context+ AdapterDriverVersion= AddonsShouldHaveBlockedE10s=0 ServerURL=https://crash-reports.mozilla.com/submit?id={ec8030f7-c20a-464f-9b0e-13a3a9e97384}&version=57.0.2&buildid=20171206182557 SafeMode=0 ContentSandboxCapable=1 AdapterDeviceID=0x0a26 useragent_locale=en-US Version=57.0.2 BuildID=20171206182557 ProductID={ec8030f7-c20a-464f-9b0e-13a3a9e97384} TelemetryServerURL= DOMIPCEnabled=1 Add-ons=aushelper%40mozilla.org:2.0,e10srollout%40mozilla.org:3.05,firefox%40getpocket.com:1.0.5,screenshots%40mozilla.org:19.2.0,webcompat%40mozilla.org:1.1,followonsearch%40mozilla.com:0.9.6,shield-recipe-client%40mozilla.org:76.1,activity-stream%40mozilla.org:2017.11.07.1100-7f4e3634,formautofill%40mozilla.org:1.0,onboarding%40mozilla.org:1.0,%7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D:57.0.2 CrashTime=1512821740 UptimeTS=295.32384736 ProcessType=content StartupTime=1512821738 StackTraces={"crash_info":{"address":"0","crashing_thread":0,"type":"EXC_BAD_ACCESS / KERN_INVALID_ADDRESS"},"main_module":0,"modules":[{"base_addr":"0x105faf000","code_id":"id","debug_file":"plugin-container","debug_id":"B5A80C40794A3C129E5E90BE32676F300","end_addr":"0x105fb0000","filename":"plugin-container","version":""},{"base_addr":"0x105fb5000","code_id":"id","debug_file":"libplugin_child_interpose.dylib","debug_id":"61AF87DC3B743C5088E057C011B6255F0","end_addr":"0x105fb6000","filename":"libplugin_child_interpose.dylib","version":"0.1.0.0"},{"base_addr":"0x105fba000","code_id":"id","debug_file":"Accelerate","debug_id":"3468C044F1F93A8FB861B1A9A0614EC30","end_addr":"0x105fbb000","filename":"Accelerate","version":"0.4.0.0"},{"base_addr":"0x105fbe000","code_id":"id","debug_file":"Cocoa","debug_id":"F1AED1E8ACC231F0B85E17E41167FC880","end_addr":"0x105fbf000","filename":"Cocoa","version":"0.22.0.0"},{"base_addr":"0x105fc2000","code_id":"id","debug_file":"ApplicationServices","debug_id":"7627DBD6497B3AB79B63F0532EDF09B80","end_addr":"0x105fc3000","filename":"ApplicationServices","version":"0.50.0.0"},{"base_addr":"0x105fc8000","code_id":"id","debug_file":"AudioToolbox","debug_id":"71699B6E8B9439E2801F8467C2B5B6210","end_addr":"0x106254000","filename":"AudioToolbox","version":"0.492.0.0"},{"base_addr":"0x106390000","code_id":"id","debug_file":"libnss3.dylib","debug_id":"5492B614516C38DBA3ECCA2F2A6BBE5D0","end_addr":"0x1065c7000","filename":"libnss3.dylib","version":"0.1.0.0"},{"base_addr":"0x1065ff0

I just updated to Mac OS Sierra 10.13.2 and get a constant "Gah. Your tab just crashed" error message. Chrome seems to work OK. Crash report: E10SCohort=test ContentSandboxLevel=3 AdapterVendorID=0x8086 TelemetryEnvironment={"build":{"applicationId":"{ec8030f7-c20a-464f-9b0e-13a3a9e97384}","applicationName":"Firefox","architecture":"x86-64","buildId":"20171206182557","version":"57.0.2","vendor":"Mozilla","platformVersion":"57.0.2","xpcomAbi":"x86_64-gcc3","hotfixVersion":"20170302.01","updaterAvailable":true},"partner":{"distributionId":null,"distributionVersion":null,"partnerId":null,"distributor":null,"distributorChannel":null,"partnerNames":[]},"system":{"memoryMB":8192,"virtualMaxMB":null,"cpu":{"count":4,"cores":2,"vendor":"GenuineIntel","family":6,"model":69,"stepping":1,"l2cacheKB":256,"l3cacheKB":4096,"speedMHz":1700,"extensions":["hasMMX","hasSSE","hasSSE2","hasSSE3","hasSSSE3","hasSSE4_1","hasSSE4_2","hasAVX","hasAVX2","hasAES"]},"os":{"name":"Darwin","version":"17.3.0","locale":"en-GB"},"hdd":{"profile":{"model":null,"revision":null},"binary":{"model":null,"revision":null},"system":{"model":null,"revision":null}},"gfx":{"D2DEnabled":null,"DWriteEnabled":null,"ContentBackend":"Skia","adapters":[{"description":null,"vendorID":"0x8086","deviceID":"0x0a26","subsysID":null,"RAM":null,"driver":null,"driverVersion":null,"driverDate":null,"GPUActive":true}],"monitors":[{"screenWidth":1440,"screenHeight":900,"scale":1}],"features":{"compositor":"basic","gpuProcess":{"status":"unused"}}},"appleModelId":"MacBookAir6,2"},"settings":{"attribution":{},"blocklistEnabled":true,"e10sEnabled":true,"e10sMultiProcesses":1,"e10sCohort":"test","telemetryEnabled":false,"locale":"en-US","update":{"channel":"release","enabled":true,"autoDownload":true},"userPrefs":{"browser.cache.disk.capacity":358400,"browser.newtabpage.enabled":false,"browser.newtabpage.enhanced":false,"browser.search.region":"CH","browser.search.widget.inNavBar":true,"browser.startup.homepage":"<user-set>","browser.urlbar.suggest.searches":false,"browser.urlbar.userMadeSearchSuggestionsChoice":true,"dom.max_script_run_time":40,"layers.acceleration.disabled":true,"network.proxy.http":"<user-set>"},"sandbox":{"effectiveContentProcessLevel":3},"addonCompatibilityCheckEnabled":true,"isDefaultBrowser":true,"defaultSearchEngine":"ddg","defaultSearchEngineData":{"name":"DuckDuckGo","loadPath":"jar:[app]/omni.ja!browser/ddg.xml","origin":"default","submissionURL":"https://duckduckgo.com/?q=&t=ffsb"},"searchCohort":"nov17-1"},"profile":{"creationDate":16401,"resetDate":16848},"experiments":{"e10sCohort":{"branch":"test"},"searchCohort":{"branch":"nov17-1"}},"addons":{"activeAddons":{"e10srollout@mozilla.org":{"version":"3.05","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":"Staged rollout of Firefox multi-process feature.","name":"Multi-process staged rollout","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":16918},"firefox@getpocket.com":{"version":"1.0.5","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":"When you find something you want to view later, put it in Pocket.","name":"Pocket","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":16918},"webcompat@mozilla.org":{"version":"1.1","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":"Urgent post-release fixes for web compatibility.","name":"Web Compat","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17065},"aushelper@mozilla.org":{"version":"2.0","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":"Sets value(s) in the update url based on custom checks.","name":"Application Update Service Helper","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17123},"screenshots@mozilla.org":{"version":"19.2.0","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":null,"name":"Firefox Screenshots","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17331},"followonsearch@mozilla.com":{"version":"0.9.6","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":null,"name":"Follow-on Search Telemetry","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17386},"shield-recipe-client@mozilla.org":{"version":"76.1","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":"Client to download and run recipes for SHIELD, Heartbeat, etc.","name":"Shield Recipe Client","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17386},"activity-stream@mozilla.org":{"version":"2017.11.07.1100-7f4e3634","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":"A rich visual history feed and a reimagined home page make it easier than ever to find exactly what ","name":"Activity Stream","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17438},"formautofill@mozilla.org":{"version":"1.0","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":"Autofill forms with saved profiles","name":"Form Autofill","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17438},"onboarding@mozilla.org":{"version":"1.0","scope":1,"type":"extension","updateDay":17506,"isSystem":true,"isWebExtension":false,"multiprocessCompatible":true,"blocklisted":false,"description":"Photon onboarding","name":"Photon onboarding","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17438}},"theme":{"id":"{972ce4c6-7e08-4474-a285-3208198ce6fd}","blocklisted":false,"description":"The default theme.","name":"Default","userDisabled":false,"appDisabled":false,"version":"57.0.2","scope":4,"foreignInstall":false,"hasBinaryComponents":false,"installDay":16808,"updateDay":17506},"activePlugins":[{"name":"Shockwave Flash","version":"27.0.0.187","description":"Shockwave Flash 27.0 r0","blocklisted":false,"disabled":false,"clicktoplay":true,"mimeTypes":["application/x-shockwave-flash","application/futuresplash"],"updateDay":17485}],"activeGMPlugins":{"gmp-gmpopenh264":{"version":"1.7.1","userDisabled":false,"applyBackgroundUpdates":1},"gmp-widevinecdm":{"version":"1.4.8.1008","userDisabled":false,"applyBackgroundUpdates":1}},"activeExperiment":{},"persona":null}} EMCheckCompatibility=true ProductName=Firefox TelemetryClientId= Vendor=Mozilla InstallTime=1512821395 Theme=classic/1.0 ReleaseChannel=release Notes=AdapterVendorID: 0x8086, AdapterDeviceID: 0x0a26FP(D00-L1100-W00000000-T010) WR? WR- GL Context? GL Context+ AdapterDriverVersion= AddonsShouldHaveBlockedE10s=0 ServerURL=https://crash-reports.mozilla.com/submit?id={ec8030f7-c20a-464f-9b0e-13a3a9e97384}&version=57.0.2&buildid=20171206182557 SafeMode=0 ContentSandboxCapable=1 AdapterDeviceID=0x0a26 useragent_locale=en-US Version=57.0.2 BuildID=20171206182557 ProductID={ec8030f7-c20a-464f-9b0e-13a3a9e97384} TelemetryServerURL= DOMIPCEnabled=1 Add-ons=aushelper%40mozilla.org:2.0,e10srollout%40mozilla.org:3.05,firefox%40getpocket.com:1.0.5,screenshots%40mozilla.org:19.2.0,webcompat%40mozilla.org:1.1,followonsearch%40mozilla.com:0.9.6,shield-recipe-client%40mozilla.org:76.1,activity-stream%40mozilla.org:2017.11.07.1100-7f4e3634,formautofill%40mozilla.org:1.0,onboarding%40mozilla.org:1.0,%7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D:57.0.2 CrashTime=1512821740 UptimeTS=295.32384736 ProcessType=content StartupTime=1512821738 StackTraces={"crash_info":{"address":"0","crashing_thread":0,"type":"EXC_BAD_ACCESS / KERN_INVALID_ADDRESS"},"main_module":0,"modules":[{"base_addr":"0x105faf000","code_id":"id","debug_file":"plugin-container","debug_id":"B5A80C40794A3C129E5E90BE32676F300","end_addr":"0x105fb0000","filename":"plugin-container","version":""},{"base_addr":"0x105fb5000","code_id":"id","debug_file":"libplugin_child_interpose.dylib","debug_id":"61AF87DC3B743C5088E057C011B6255F0","end_addr":"0x105fb6000","filename":"libplugin_child_interpose.dylib","version":"0.1.0.0"},{"base_addr":"0x105fba000","code_id":"id","debug_file":"Accelerate","debug_id":"3468C044F1F93A8FB861B1A9A0614EC30","end_addr":"0x105fbb000","filename":"Accelerate","version":"0.4.0.0"},{"base_addr":"0x105fbe000","code_id":"id","debug_file":"Cocoa","debug_id":"F1AED1E8ACC231F0B85E17E41167FC880","end_addr":"0x105fbf000","filename":"Cocoa","version":"0.22.0.0"},{"base_addr":"0x105fc2000","code_id":"id","debug_file":"ApplicationServices","debug_id":"7627DBD6497B3AB79B63F0532EDF09B80","end_addr":"0x105fc3000","filename":"ApplicationServices","version":"0.50.0.0"},{"base_addr":"0x105fc8000","code_id":"id","debug_file":"AudioToolbox","debug_id":"71699B6E8B9439E2801F8467C2B5B6210","end_addr":"0x106254000","filename":"AudioToolbox","version":"0.492.0.0"},{"base_addr":"0x106390000","code_id":"id","debug_file":"libnss3.dylib","debug_id":"5492B614516C38DBA3ECCA2F2A6BBE5D0","end_addr":"0x1065c7000","filename":"libnss3.dylib","version":"0.1.0.0"},{"base_addr":"0x1065ff0

All Replies (7)

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We're sorry to hear that Firefox is crashing. In order to assist you better, please follow the steps below to provide us crash IDs to help us learn more about your crash.

The crash report is several pages of data. We need the report numbers to see the whole report.

  1. Enter about:crashes in the Firefox address bar and press Enter. A Submitted Crash Reports list will appear, similar to the one shown below.
  2. Copy the 5 most recent Report IDs that start with bp- and then go back to your forum question and paste those IDs into the "Post a Reply" box.

Note: If a recent Report ID does not start with bp- click on it to submit the report.

(Please don't take a screenshot of your crashes, just copy and paste the IDs. The below image is just an example of what your Firefox screen should look like.)

aboutcrashesFx57

Thank you for your help!

More information and further troubleshooting steps can be found in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

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084BF1F2-21C4-4117-A215-1CAFC25F75A2 09/12/2017 10:27 768390A1-6515-415A-BD90-A75D625B621D 09/12/2017 05:06 4D921B35-96C5-495A-8FA9-80344B83ED92 09/12/2017 05:06 0973C583-B286-4687-9AE9-9B3152301DE4 09/12/2017 05:06 106B8013-6B63-4AD4-9340-B73BF17552E7 09/12/2017 05:06 A0C902FB-70F8-41BD-847F-F0DC70EF09F8 09/12/2017 05:06

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By the way, I tried starting in safe mode and it gets the same error message

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Also, Chrome seems to have no problem opening up web pages. Both Safari and Firefox don't work: Safari opens, but never manages to make a connection, the beach ball spins as the progress bar for opening a page is stuck, and Firefox still gives the "Gah. Tab crashed" error

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Start it up in safemode again but make sure to select refresh firefox at the first prompt

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It didn't help. I started in safe mode, asked for refresh, it reloaded and then said "I'm having trouble recovering your old tabs", but when I tried opening a new page it still gives me the "Gah. Tab crashed" error.

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I am having the same issues. Safari and Firefox are not working since i updated the macOS Sierra (10.13.2) this morning!

Only Chrome is working.

thanks