Hi there
I have a peculiar error , I re-named an existing .mb file in the "save as" pop up window in maya 2015 and the file is now unreadable and has been changed to a ".file" when I try and open the file or change the file type back to .mb my computer says that the file has been moved and can not be located even though the file has nver been moved and is still situated on my USB pen drive, the file still shows that it is 57mb in size 
CHEERS IN ADVANCE TO ANYONE WHO CAN HELP !!!