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I've noticed recently after system reboots that Firefox forgets the "Open previous windows and tabs" setting and restarts with only a blank tab. I've confirmed that this setting is ticked prior to the reboot. I know I can restore the session under History but why isn't Firefox remembering this setting and re-opening the windows & tabs like previously?

Running Firefox 135.0.1 and Mac Sequoia 15.3 (but has been happening in recent previous versions of both).

Hello,

I Created a few weeks ago a custom theme for my own personal use (Not uploaded to WEB). I exported it from Firefox myself and fully tested that it could be loaded as is custom when I create something. Unfortunately I had a system crash and have had to reinstall software & apps including FireFox. I am using exactly the same version of firefox as before and all the same identical plug-ins. I know on some ocassions issues can be caused with different versions of the same software. There for I have made completly sure that I have installed all same versions as before.

I always get error when trying to load my theme. I know the file is not corrupted as I mentioned I had tested it.

The error that is displayed is as follow.

about:addons This add-on could not be installed because it appears to be corrupt.

As I mentioned above I know the file is not corrupt. Can someone please help as I would like to do this locally not via the WEB or Firefox addon's site.