Thanks for getting back to me. I hadn’t tried that, it was a good suggestion, thanks.
In fact, rather than just fully remove the two Sublime Text 3 folders in AppData/Local and AppData/Roaming I went into each folder and listed all files in all subfolders (searching on . ) and ordered the list by last modified date. This gave me a small number of files with yesterday’s date, the day of the crash. There were 4 in AppData/Local and 2 in AppData/Roaming.
I selectively renamed these and tried restarting ST3. When I renamed AppData/Roaming/…/Preferences.sublime-settings ST3 finally started, and with at least some files from the previous session loaded, and all my settings seemingly intact! I closed and reopened ST3 and all appears to be well.
Looking now in AppData/Local I can see that the four files I renamed, Startup.cache, last_run.json and two files with long random names, have been recreated, but in AppData/Roaming only Session.sublime_session has been recreated, Preferences.sublime-settings has not. I wonder if this will cause problems? <= Edit; well, of course it means that my user settings disappeared. So I used ST3 to open the renamed file and copied the contents into “user settings” - result? ST3 crashes again! At least I know what to do now.
Is it possible to make a backup of all my ST3 settings and customisations in case this happens again? I have got it exactly how I like it and would prefer not to have to go through tweaking all the individual settings and installing packages again.
