Can't sync iPad after iOS upgrade to7.0.2 - repeated authorisation prompt - using admin profile, file SC info does not exist

Question

Hello,
After I upgraded to iOS 7.0.2 I can't sync iPad mini with PC (on Windows XP). I keep getting the folowing message: "The iPad could not be synced because this computer is no longer authorized for purchase items on this iPad". I tried everything:
1) De-authorizing and rebooting (about 100 times);
2) De-installing and reinstalling itunes;
3) Deactivating the firewall;
4) Run Diagnostics (result - all works fine including sync);
5) Tried to look for the "SC info" directory or file everyone is referring to in the Computer (Hidden files) of the iTunes directory - nothing;
6) Ticking and unticking the |Sync over Wi-Fi" option;
7) Changing backup from iCloud to this Computer and back.
I am using the admin account on my PC - doesn't help.
I cannot sync anything at all.
BTW - on the PC and on the iPad - everything that is there plays OK. I can get stuff from iStore both from iPad and from the PC - but I can't sync the two.
It looks like an iOS 7 bug to me - any ideas or advice?
Thanks.
D.

Answer 1

No I have tried multiple connections, at home, at work, and even at my church but to no avail.  For example I have recently purchased a CD from Itunes using my computer, but my ipad will only play it from the cloud.  I've tried to download straight from my Ipad and that too does not work.  When ever I try to plug the Ipad into the computer a window pops up and says that the sync has failed.  If I try to drag the file to the Ipad it will say it's loading than just quit before it transfers.  hmmm.  I hope they get this bug fixed some.  would really like to have that CD to isten to on the go.   Another issue I am no having is the apps are having trouble updating.  I have tried to turn off auto update and do it manually and that too is failing.