As long as V5 is open the folder which a selected STL is in is locked and unable to be used.
I have to shut V5 down in order to be able to move the folder or do any other action with it. This is a real pain.
It also doesn't matter if that STL is actually selected at the current time.
I can select STL A and slice. Once done I can select STL B (different folder) and slice but I cannot do anything with the folder STL A is in until S3D V5 is closed.