Hi Josh, sorry to say but this is an on-going issue between Adobe and Microsoft. It has something to do with the manner Windows Explorer displays the "thumbnail" when you have the directory open.

Try changing your folder/directory view to DETAILS, to eliminate the system getting confused with "who" (Photoshop or Windows) has the file open.

I've got to take off for a little bit but i'll try to get you a better solution.

:)
retrocity