some apps wont sync or if i update via itunes it wont update apps i get error 0xE800002E but only for some apps
edit: nm fixed it i just unchecked the apps causing problems from the sync apps tab which removed the apps then i checked them off again and resynced it which reinstalls it and now all is good
it happened to me serveral times too...i just re-sync..and re-sync...close out iTunes, relaunch iTunes and resync...somehow someways it worked....try that.