iPad 3G/WiFi 64Gb IOS 4.2.1, iTunes 10.1.2.17, Windows XP SP3, 4GB
I have been unable to resolve this on all the major sites including through Google searching. iTunes simply will not synch the apps I downloaded to the iPad to iTunes. Nor will apps downloaded through iTunes synch to the iPad. It worked perfectly until a month or so ago when iTunes started deleting files during synch. I understand that delete problem which I now can handle and which is an iTunes terrible programming bug (apple doesn't admit it). They just blame the user.
I have done everything from resets, re-creating the iTunes directory from scratch, and every Apple bulletin, Apple forum discussion thread, forum "try this", and other web site discussion threads, transfer purchases instead of synch, deleting and recreating the app directory, etc.
Absolutely nothing works. I note others have the same problem and their posts are not resolved either. Apple has been silent on their web site.
Can anyone point me in a direction other than deleting everything off the iPad and starting over. That isn't garanteed to work either from other posts I've read.