Interesting. I followed your instructions, but there was no entry in AppData\Local folder, so I couldn’t rename it. I started FileVoyager and this time there was no access violation. (I guess this may not be good news, because the problem is not repeatable. I’ll let you know if the problem re-occurs and follow those steps if it does.)
And I suppose you have recovered all your settings, because I gave you the wrong environement variable.
FV settings are actually stored in %APPDATA%, not %LOCALAPPDATA%.
Fortunately, this error worked in your favor: your settings were preserved, and the Access Violation issue has been resolved. 😉
I will mark this topic as [RESOLVED]. However, please don’t hesitate to create a new topic or post here again if the issue reoccurs.