I tried to open a second repository while a commit was in progress. SourceTree crashed and wouldn't re-open. I reinstalled and that didn't help, so I removed my AppData\Local\Atlassian folder. SourceTree then worked until I asked it to re-open that first repository, whereupon it crashed again and once again wouldn't re-open. git status doesn't show anything wrong with the repo. What can I do to get SourceTree working again?