"Could not rename file" error

I have been a PDMworks user for a couple years, and havenever had this problem. I was doing some routine cleanup of ourvault (moving projects into sub-directories, renamingprojects/parts/etc) because it had become quite a mess. However,one file refuses to be renamed! It is used in several dozen placesand I would like to change it since the person who originally drewit actually mispelled the name. Here is what happens:

When I try to rename via Solidworks Explorer "Solidworks Rename" orvia the PDM sidebar in Solidworks "Rename" I get the error "Couldnot rename file." No other explanation. I have tried rebooting,restarting the vault service on the server, all to no avail.... Anysuggestions? Maybe I'm missing something simple.

SolidworksWorkgroup Pdm