iOS7.0.2 & Itunes 11.1.0.126 sync problems with iPad2

iOS7.0.2 & Itunes 11.1.0.126 sync problems with iPad2 - Does step 1 & 2 of sync. Then this message> The iPad "my ipad name" could not be synced because this computer is no longer authorised for purchased items that are on this iPad. To authorise this computer for items from the iTunes Store choose Store> Authorise This Computer.

Tried all that many times. Also went into my account and de-athorised all computers and re-authorised this one. No joy. What next. Fedup that things are going wrong with apple. We buy apple because it works I always say. Yeah right.