Please upgrade here. These earlier versions are no longer being updated and have security issues.
HackerOne users: Testing against this community violates our program's Terms of Service and will result in your bounty being denied.
Change the root directory

Answers
@solonova
If you change directories or folders, or rename the Vanilla folder, then you need to delete the ini files in the Vanilla/cache folder.
That should solve your issue.
Thank you Dr Whu :P