The error message is "explorer.exe has generated errors and will be closed by Windows. You will need to restart the program. An error log is being created." The screen then goes blank, then restores my active desktop and closes the folder that had the avi file(s). This happens every time I just drag my cursor over any avi file. I can't even click and access the file. All other files (mpeg, mp3, etc.) are fine. Sorry I didn't get all this info to you the first posting. Thanks!