How to stop Sublime Text 2 crashing on startup

For Sublime 3

• on Mac, Auto Save session exists in this path ~/Library/Application Support/Sublime Text 3/Local. Just go to this path delete all the files. Sublime will start working fresh.

• On Linux, Auto Save session exists in /home/<USER>/.config/sublime-text-3/Local. Delete all the files you'll be good to go fresh.

• On Windows the path is %APPDATA%\Sublime Text 3\Local

You can try hunting around for the file causing the error. However, I'd recommend reverting your install (link) though rather than deleting, I'd just move it somewhere temporarily. Be sure to move your User folder out. After reverting, move the User folder back. If you used package control, it will grab all of the installed plugins again. If you didn't you will need to move those back manually. If it's a particular file that's causing issues (not a plugin) then you could also edit the Session file. It's a bit more involved but can be found in Application Support/Sublime Text 2/Settings.

If you could post the file causing the issue, we could probably tell you how to fix put it back into a working state. If it's a settings file, it might be as simple as malformed json. I'm unsure though as you didn't give much detail on the actual error.