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.

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.)

Thank you for your help!

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

bp-657e2134-e1fa-4a2c-992f-810aa2160122 1/22/16 6:42 AM bp-b8b88f7c-cdcd-489b-a912-4c5752160122 1/22/16 6:42 AM bp-ab143ca7-29f3-4c5c-b96e-196262160122 1/22/16 6:42 AM bp-edd948d8-c10e-4688-92f7-4b1e42160122 1/22/16 6:37 AM bp-45397913-25d8-40ca-958c-bdd412160122 1/21/16 11:53 PM

All 5 crashes are for the same issue. Firefox 43.0.4 Crash Report [@ CTFontCopyFamilyName ]

Sorry, not a Mac user and I have no idea what that type of crash is about. You'll have to wait for another contributor to help you later today. But meanwhile, you might try troubleshooting your extensions to see if one of them might be contributing to those crashes. Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

I started up with all of the extensions turned off, and still got the crashes. My understanding is that this eliminates them. Correct?

That is true.

Start your Computer in safe mode with networking. Then start Firefox. Try Safe web sites. Is the problem still there?

Starting The Computer In Safe Mode;
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