Heard that if your phone is jailbroken you have to install something through Cydia to get apps to sync from the computer to your phone. May be wrong, just one of my friends that has 3.0 said he has to do that. I have a 3GS so I don't know first hand about that. May want to check that out.
There's no article on Apple support page for that error... Never heard of it, so that'd be my best guess.
16GB iPhone 3G S⃣ White
8GB iPhone 3G Black
30GB iPod Classic
LOL... why would you have to install something from CYDIA to sync APPLE applications?! If your phone was jailbroken and you used the "update" button this can cause issues. RESTORE, set up as new and resync. If these apps are cracked then you can stop the discussion right now.