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.

Separate Security Issue: Update your Flash Player or remove it using these links; http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html Uninstall Flash Player | Windows http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-mac-os.html Uninstall Flash Player | Mac

Note: Windows users should download the ActiveX for Internet Explorer. and the plugin for Plugin-based browsers (like Firefox).

Note: Windows 8 and Windows 10 have built-in flash players and Adobe will cause a conflict. Install the plugin only. Not the ActiveX.

Flash Player Version: Version 31.0.0.108

https://get.adobe.com/flashplayer/ Direct link scans current system and browser Note: Other software is offered in the download. <Windows Only>

https://get.adobe.com/flashplayer/otherversions/ Step 1: Select Operating System Step 2: Select A Version (Firefox, Win IE . . . .) Note: Other software is offered in the download. <Windows Only> +++++++++++++++++++ See if there are updates for your graphics drivers https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

Roob said

When I try to upload an image to Firefox Developer Edition my browser freezes and doesn't unfreeze until I force it to quit. This has been happening consistently without fail for about 3 weeks and I can't really figure out how anyone else has gotten around this.

I see you are using Mac OS X 10.14 Mojave

This Firefox hangs on various dialog windows (on Mac OS X 10.14 Mojave) has been fixed in Firefox 62.0.3, 60.2.2esr, 63.0b11 (Beta/Dev Ed) and also in a recent Nightly channel build.

Since you are testing a Beta channel build of Firefox 63.0 so do you have the recent 63.0b11 update?

Developers Edition is same as Beta but with developers features.

Bug 1489785 comment 85

FFus3r - I only had 2 reports starting with bp-. Is this the information you were looking for? bp-7df0878e-4606-4187-8779-7bcfa0181002 bp-c7949084-bd3a-4c3b-acb6-f15890180921

Roob please see my reply above.