Can't sync apps to itouch.
 

My problem with syncing with my itouch is that it works for all my music but iTunes refuses to sync the apps.
If I access the iTunes store directly from the itouch, it says I already have the app, but lets me download it again directly to the itouch.
Anyone any ideas why I can't sync the apps with iTunes on the iMac?

Are they checked off in the application tab?

Yes.
When iTunes finishes syncing my music files, it comes up with a message saying it was unable to sync the applications.

I've got the same problem and I don't know what I can do
I already have restore my iTouch, iTunes synch. the music , the videos , the podcasts,... but not my apps... :(

PLEASE HELP