Redirected network drive, iTunes, and iOS 8.0.2

Question

It took me two days to troubleshoot this problem.  I'm up and functioning again, but I thought I'd post this in case anyone else has the peculiar circumstances that broke my iTunes.  Systems:  Windows 8.1, iTunes 11.4.0.18, iPhone 5S 32GB.  Symptoms: after upgrade to iOS 8.0.2, iTunes sync would fail every time at the same point, after syncing Outlook contacts and calendar, after syncing music, at the point where it starts to sync apps.  I isolated it to that instant by doing a clean install of iOS and a clean install of iTunes, empty music library, one app ready to sync, start the sync, and boom!  Failed every time.  Ruled out any problem with the phone, to the point of trying it with an entirely new phone pre-loaded with 8.0.2.
I eventually found that if I set up a new Windows user and installed iTunes, it worked fine.  Then I realized that the key variable was redirection of the My Music folder.  We keep everything on a server that gets backed up regularly, with the Windows "My Documents" directory redirected to "\\server2\ldh\My Documents\" and Music redirected to "\\server2\ldh\Music\".  When I went back to my regular user account and removed that folder redirection, pointing it back to "C:\users\ldh\Music\", all was well.
No explanation for why music and contacts would sync but apps wouldn't.  The contacts reside in the redirected "My Documents" directory, and the music files reside in a network drive M: mapped to "\\server2\share\musicfiles\".  The apps reside in "...\Music\iTunes\Mobile Applications", as standard.
This didn't happen with iOS 8.0.1.  Everything was working fine until the 8.0.2 upgrade, and then after the upgrade every sync failed until I found the work-around. 
My file server is running Ubuntu Linux 14.04.1 and Samba 4.1.6-Ubuntu.  I don't have a Windows server any more, so I can't say whether the the problem is stems from redirecting the Music folder per se -- if redirecting Music to a folder on a Windows server would have produced the same result -- or if it stems from some complex interaction among iOS, Windows, Samba, and Linux.  If the latter, that might explain why no one on any bulletin board seemed to have this problem.  But just in case there's a kindred spirit out there somewhere, I thought I'd document the issue.  Who knows, maybe Apple will even find the problem and fix it. 

Answer 1

This is actually his is actiually a wider problem, with the introduction of iTunes version 14, Apple created a problem with accessing iTunes located on a network drive. This happened to me last year and 2nd Level support wasn't aware of the scale of the problem nor the level of angst in their own forms.
i Had to resolve my problem by physically mapping the network drive.
Now that I have had to rebuild my PC, my domain policies have automatically redirected the iTunes library.  tt worked ok on the day of installing iTune, but has not worked since. 
ONe would have thought they they would have fixed this in the intervening period