I recently downloaded ANBU/AonE's Naruto 81-90. When I try to open the folder containing the episodes, Windows Explorer says it encountered an error and needs to close.

Curiously, I have no problems playing the episodes, if for example I just ignore the error message by clicking another window (thereby putting the error message into the background) and then dragging and dropping an anime file into my DivX player.

What's going on, and what can I do to fix it?

I had the same problem with Gantz 1-11, but I had no problems with Naruto 1-80, which I downloaded about a month ago.

Sorry if this has been asked before, but I searched for my problem and couldn't find it. Thanks in advance for your help.