iTunes won't sync with photos included
I've read a lot about this on the web, but can't seem to find anything consistent and the "solutions" I've tried haven't worked anyway. So here is my situation and maybe someone can offer something I haven't tried:
I bought the a new iMac 21.5 when they last were upgraded. I took a backup of my macbook and loaded that into the new iMac.
I hadn't paid much attention to the syncing of photos because I don't do many, but last night I was trying to get some new pics and videos I had gotten into iphoto on the iMac to sync to the iphone. I was surprised when they didn't show up on the phone and then I saw that the checkbox to sync photos was not checked. When I marked it, it wouldn't sync at all (got error -50). Same thing happened with my new ipad mini as well as on old iphone 4.
I took my iphone to school, where I had moved my laptop, and tried syncing there. I was surprised that the photo checkmark was not marked on that one either so I have no idea when that change happened. Anyway, after marking it, the phone was able to synce with the laptop after I approved it as "trusted".
Back on my iMac, I still can't sync though, if photos/videos are included.
Any ideas on what I can do?