Folders don't appear in PhotoMechanic even if I reset the icon

Hello
FolderIco is a great program but when I change icon of a folder it doesn't appear in photo mechanic even if i reset the icon
see the screen capture
https://picasaweb.google.com/lh/photo/1VZGUlKVkmVkvjoteKwKVQ?feat=directlink
thanks for your help