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Tried to fix Firefox crashes, lost all my bookmarks + FF app support folder

  • 25 replies
  • 2 have this problem
  • Last reply by FredMcD

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I tried to create a new user profile to solve the Ugh! Firefox has crashed problem. Now my Firefox application support file has disappeared! And I appear to have lost all my bookmarks. I tried to restore from Time machine. Didn't work.

All Replies (5)

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As a Windows person, I find it hard to interpret Mac crash reports. And since the "signature" was different in each of the reports I looked at, it's difficult to find the common thread.

If this occurs often, could you try these two tests (separately):

(1) Disable all plugins by setting them to "never Activate"


  • Command+Shift+a (Windows: Ctrl+Shift+a)
  • "3-bar" menu button (or Tools menu) > Add-ons
  • type or paste about:addons in the address bar and press Enter/Return

In the left column of the Add-ons page, click Plugins.

Then you can disable-by-default on the right side.

Any improvement?

(2) Try Firefox's Safe Mode

In its Safe Mode, Firefox temporarily deactivates extensions, hardware acceleration, JavaScript compilers, userChrome.css/userContent.css, and some other features to help you assess whether these are causing the problem.

If Firefox is not running: Hold down the option/alt key when starting Firefox.

If Firefox is running: You can restart Firefox in Safe Mode using either:

  • "3-bar" menu button > "?" Help button > Restart with Add-ons Disabled
  • (menu bar) Help menu > Restart with Add-ons Disabled

and OK the restart.

Both scenarios: A small dialog should appear. Click "Start in Safe Mode" (not Refresh).

Any improvement?

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Thanks - I did what you suggest. Firefox still crashes, but a lot less. I'm OK with this for now. Thanks!

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In the address bar, type about:crashes<enter>. Note: If any reports do not have BP- in front of the numbers/letters, click it to submit them.

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

Using your mouse, mark the most recent 7 - 10 Submitted crash reports, and copy them. Now go to the reply box and paste them in.


For more help on crash reports, see;

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Submitted Crash Reports Report ID Date Submitted bp-4cc58759-23e1-4d6e-afca-828fe0190119 2019-01-19, 1:46 PM View bp-06c8a737-57a7-4945-aeaa-f536e0190119 2019-01-19, 1:46 PM View bp-83ced55c-294e-4659-a5c8-3b55a0190119 2019-01-19, 1:46 PM View bp-f1e55e92-fe44-41e3-bb5f-d58750190119 2019-01-19, 1:46 PM View bp-486d8c93-2e47-4389-aa56-542bd0190119 2019-01-19, 1:46 PM View bp-6e569a5b-cd14-4861-a0fe-8d1210190119 2019-01-19, 1:46 PM View bp-3e05ff24-eaa3-432e-be0f-bd3b20190119 2019-01-19, 1:46 PM View bp-3bd9c4bc-598c-495f-a596-78aec0190119 2019-01-19, 1:46 PM View bp-4afde8fc-955e-4a8d-aa90-a0e6e0190119 2019-01-19, 1:46 PM View bp-587a7067-840b-4c1d-9bd4-5c1cd0190113 2019-01-13, 1:01 PM View bp-1a4b36dd-3a33-4e0c-af22-757f30190113 2019-01-13, 10:53 AM View bp-8362bfad-79b6-4119-ba52-376df0190113 2019-01-13, 10:53 AM View bp-b4f4744a-684f-4960-aeff-16d330190113 2019-01-13, 9:50 AM View

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