In case that MPR500 Pro can't be opened (message says "The application encountered an error and should be closed ...) ,

you can try to fix the problem by uninstalling the ThumbnailListCtrl.ocx file from the system and re-install it.

In windows XP , you should press the start button then select run and type cmd (in vista and windows 7 you can simply type cmd in the empty field with the magnifying glass).

Then navigate to the folder where the MPR500 Pro is installed and do the following procedure (2 simple commands)