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.)

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

I don't know what this crash report is about.

• Firefox 50.0.2 Crash Report [@ mozilla::dom::Element::SetAttr ]

You can try the basic steps to deal with crashes.

• https://support.mozilla.org/kb/Firefox+crashes
• http://kb.mozillazine.org/Firefox_crashes

You can update to Firefox 50.1.0 via "Help > About" to get the latest security fixes.