cmdshim32.dll = COMODO Internet Security 29Jun 17 This reported issue is caused by incompatibility with Microsoft Windows update KB4022716. Comodo teams is working over the fix. Dates of the Hotfix releases will be published later this week. Till that Hotfixes we strongly recommend users to not install mentioned Windows update KB4022716.

Was in right Post but someone did not see I was working on this. Ok Hello, sorry to hear crashing. Some exception errors are possible when Flash is corrupted so please update your Flash : https://get.adobe.com/flashplayer/ Direct link scans current system and browser Note: Other software is offered in the download. <Windows Only> A earlier exception this year was a fault of a Windows 10 Update and Comodo and Kaspersky Software that conflicted with Firefox. So if you are using Comodo/Kaspersky please check their forum to see if others have reported it. I have a issue with Malwarebytes, Windows and Firefox but is just a error message when I close Firefox so please look into your Security Software. Well seems like have done a lot already that I would recommend. A clean install after a registry cleaner and then yank out all remaining traces is a horrible experience but. So will go here I guess to make sure your Windows is having no issues with it self which could cause other issues : https://support.microsoft.com/en-us/help/929833/use-the-system-file-checker-tool-to-repair-missing-or-corrupted-system I do not know what Extensions you are using as is not reported here. If can get Firefox up long enough disable any that are left or if still from the refresh there should not be any. The other thing is do you have programs installed that hookup to Firefox in any way ? If so possible stop that or uninstall it. Some Downloader Programs can cause this issue as well. Please update any Video and camera software, also try disable a camera while when working on this issue same with a printer almost anything could cause this so process of elimination. https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems?redirectlocale=en-US&redirectslug=Troubleshooting+extensions+and+themes If you can get back to Safe Mode this is useful : https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Ok Please let us know if this solved your issue or if need further assistance.