Links in game explorer stopped working

Hi,

I just installed Windows Vista a couple days ago and have been loading
programs and games over the last two days. When I click on the start button
and then on the games tab on the right column of the start menu, it opens up
a games folder (I guess this is called the "Game Explorer"?) containing the
game icon and link to that game. Well now I get the following error message
when I click on any of them:

"This file does not have a program associated with it for performing this
action. Create an association in the Set Associations control panel."

OK, it doesn't matter what icon I click on, I get the same message. It
happens for windows games (ie-Minesweeper) or games I've installed myself
(ie-Crysis).

Furthermore, I can go into the start button the old fashion way and the game
starts fine. (ie - Start-> All Programs -> Games).

I can't figure out how to correct this error. If I drag a working link into
this folder, then the link stops working.

Any ideas?