'Open Containing Folder' fails

For whatever reason, the 'Open Containing Folder' option fails and does nothing.

To my knowledge, all you have to do to get that to work is pass a quoted path to Explorer.exe; not sure why it doesn't work, on any of my comps...

Have a read of these, they may or may not help

http://www.tabletquestions.com/windows-xp/...esn-t-work.html

http://www.tabletquestions.com/windows-xp/...-fail-work.html

Didn't help. Open Containing Folder works fine in XP search and every other program I've seen it in. It just fails in Defraggler, on every computer in my home.

Edit: Here's the File Mon info. Maybe that can help pinpoint where the execution request is going.

defragglerfilemoninfode7.png

Would it be more helpful if I dumped file access from every exe/dll?