TotalFinder stores its settings in
Sometimes this file can get deleted by some aggressive system cleaning utilities (MacKeeper, CleanMyMac). Or it gets corrupted/reverted by some other means.
Since v1.6.23 TotalFinder can detect this situation and at least issue a notification to inform the affected user. Newly TotalFinder also stores a backup of TotalFinder licensing info in Finder’s own plist. So in situation of losing totalfinder.plist, the license is hopefully still kept somewhere else to be recovered automatically.
Please report your experience with this issue here.