If a shortcut is not working on your desktop, you can do one of two things:
1. Delete the shortcut, locate the programs in the programs menu, right click it, and then hit Send To, and then Desktop. That is, if you are using Windows.
2. The other is right click the shortcut icon, go to properties, and then repair the path. If you are not sure of the path, then option 1 is the easiest way to go.