Itunes won't sync photos to ipod

For some reason in iTunes I can't sync my photos in photo albums within iPhoto to my iPod anymore. It just won't do it; I say I want it to sync selected albums from within iPhotos, it says syncing ipod for about five seconds and then 'complete', but there's nothing on my ipod.
I tried setting up a new folder on my desktop, filled it with the photos I wanted to sync with and when it asked me if I wanted to sync my ipod with this new folder I said yes. Tried to sync in iTunes, nada.
What am I doing wrong, and how hard can this be? It used to work fine; I have no idea what happened to make it go pear shaped.