Hello – Firefox suddenly started crashing on startup and continues to do so every attempt — Mozilla Crash Reporter appears and MozCrashReason = MOZ_CRASH(Using observer service off the main thread!). Same crash on startup in Safe Mode. Also attempted all troubleshooting steps on Mozilla support with no luck, and haven't been able to find any existing community threads that seem to address it. Also attempted complete uninstall/reinstall. Any help getting this sorted out will be greatly appreciated. Thank you. Crash Report: AdapterDeviceID: 0x67ef AdapterVendorID: 0x1002 Add-ons: formautofill%40mozilla.org:1.0,screenshots%40mozilla.org:35.0.0,webcompat%40mozilla.org:3.0.0 BuildID: 20190124174741 ContentSandboxCapable: 1 ContentSandboxLevel: 3 CrashTime: 1548792850 DOMIPCEnabled: 1 EMCheckCompatibility: true FramePoisonBase: 9223372036600930304 FramePoisonSize: 4096 InstallTime: 1548792848 MozCrashReason: MOZ_CRASH(Using observer service off the main thread!) Notes: FP(D00-L1000-W00000000-T000) WR? WR- OMTP? OMTP+4 GL Layers? GL Context? GL Context+ GL Layers+ ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384} ProductName: Firefox ReleaseChannel: release SafeMode: 0 SecondsSinceLastCrash: 851407 StartupCrash: 0 StartupTime: 1548792848 TelemetryEnvironment: {"build":{"applicationId":"{ec8030f7-c20a-464f-9b0e-13a3a9e97384}","applicationName":"Firefox","architecture":"x86-64","buildId":"20190124174741","version":"65.0","vendor":"Mozilla","displayVersion":"65.0","platformVersion":"65.0","xpcomAbi":"x86_64-gcc3","updaterAvailable":true},"partner":{"distributionId":null,"distributionVersion":null,"partnerId":null,"distributor":null,"distributorChannel":null,"partnerNames":[]},"system":{"memoryMB":16384,"virtualMaxMB":null,"cpu":{"count":8,"cores":4,"vendor":"GenuineIntel","family":6,"model":94,"stepping":3,"l2cacheKB":256,"l3cacheKB":6144,"speedMHz":2600,"extensions":["hasMMX","hasSSE","hasSSE2","hasSSE3","hasSSSE3","hasSSE4_1","hasSSE4_2","hasAVX","hasAVX2","hasAES"]},"os":{"name":"Darwin","version":"18.2.0","locale":"en-US"},"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":"0x1002","deviceID":"0x67ef","subsysID":null,"RAM":null,"driver":null,"driverVersion":null,"driverDate":null,"GPUActive":true}],"monitors":[{"screenWidth":2560,"screenHeight":1440,"scale":2},{"screenWidth":1680,"screenHeight":1050,"scale":2}],"features":{"compositor":"none","gpuProcess":{"status":"unused"},"wrQualified":{"status":"blocked"},"webrender":{"status":"opt-in"}}},"appleModelId":"MacBookPro13,3"},"settings":{"blocklistEnabled":true,"e10sEnabled":true,"e10sMultiProcesses":4,"telemetryEnabled":false,"locale":"en-US","update":{"channel":"release","enabled":true,"autoDownload":true},"userPrefs":{"browser.search.widget.inNavBar":false},"sandbox":{"effectiveContentProcessLevel":3},"addonCompatibilityCheckEnabled":true,"isDefaultBrowser":null},"profile":{"creationDate":17913,"firstUseDate":17913},"addons":{"activeAddons":{"formautofill@mozilla.org":{"version":"1.0","scope":1,"type":"extension","updateDay":17920,"isSystem":true,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":null,"name":"Form Autofill","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17904},"screenshots@mozilla.org":{"version":"35.0.0","scope":1,"type":"extension","updateDay":17920,"isSystem":true,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":"Take clips and screenshots from the Web and save them temporarily or permanently.","name":"Firefox Screenshots","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17904},"webcompat@mozilla.org":{"version":"3.0.0","scope":1,"type":"extension","updateDay":17920,"isSystem":true,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":"Urgent post-release fixes for web compatibility.","name":"Web Compat","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":17920}},"theme":{"id":"default-theme@mozilla.org","blocklisted":false,"description":"The default theme.","name":"Default","userDisabled":false,"appDisabled":false,"version":"","scope":1,"foreignInstall":false,"hasBinaryComponents":false,"installDay":0,"updateDay":0},"activePlugins":[{"name":"dummy","version":"0.1","description":"Blocklist unavailable","blocklisted":false,"disabled":true,"clicktoplay":false,"mimeTypes":["text/there.is.only.blocklist"],"updateDay":17925}],"activeGMPlugins":{"dummy-gmp":{"version":"0.1","userDisabled":false,"applyBackgroundUpdates":1}},"persona":"default-theme@mozilla.org"}} ThreadIdNameMapping: 6:"Gecko_IOThread",7:"JS Watchdog",14:"JS Helper",10:"JS Helper",12:"JS Helper",8:"JS Helper",11:"JS Helper",13:"JS Helper",9:"JS Helper",15:"JS Helper",16:"Timer",17:"Socket Thread",19:"Cache2 I/O",20:"Cookie",22:"DOM Worker",22:"IPDL Background",24:"GMPThread",25:"Worker Launcher",26:"Compositor",27:"ImgDecoder #1",28:"ImageIO",32:"StyleThread#0",34:"StyleThread#2",33:"StyleThread#1",36:"StyleThread#4",35:"StyleThread#3",37:"StyleThread#5",49:"ImageBridgeChild",50:"ProcessHangMon",47:"Lazy Idle",48:"StreamTrans #62",48:"localStorage DB",44:"DOM Worker", Throttleable: 1 UptimeTS: 7.01949489 Vendor: Mozilla Version: 65.0 useragent_locale: en-US This report also contains technical information about the state of the application when it crashed.