Upgraded to iTunes 11.4 and now I can't sync

[VelvetElegance]

In preparation for the release of iOS8 today, I was prompted to update my iTunes to the latest version. What I didn't know what that 11.4 is optimized for 64-bit machines. As a result, during the install process, I got a random error message and now I can't sync my phone at all. I did some digging and it seems this is a known problem according to this thread:

https://discussions.apple.com/threa...t sync my iPhone 5s-sync button is greyed out.

The problem is the work around for this involves deleting these files and reinstalling 11.3.1.
/Library/Frameworks/iTunesLibrary.framework
/System/Library/CoreServices/CoreTypes.bundle/Contents/Library/MobileDevices.bun dle
/System/Library/Extensions/AppleMobileDevice.kext
/System/Library/Extensions/AppleUSBEthernetHost.kext
/System/Library/PrivateFrameworks/AirTrafficHost.framework
/System/Library/PrivateFrameworks/CoreFP.framework
/System/Library/PrivateFrameworks/DeviceLink.framework
/System/Library/PrivateFrameworks/iTunesAccess.framework
/System/Library/PrivateFrameworks/MobileDevice.framework

I looked through my files and as best I can tell, I only have the first one. i deleted it and installed 11.3.1 but I am still having the same issue. I am unable to sync my phone. Does anyone know of any workarounds. How can I get an actual working copy of iTunes?

 

[Solver]

You could try the bundled solution in the thread,
https://discussions.apple.com/message/26578380#26578380

This looks promising:
"
Success!! cwa2's instruction's are spot on. My iPhone is backing up and syncing again! I, too, am running OS 10.6.8, and I have reinstalled iTunes 11.3.1 and have iOS 8 on my iPhone 5s. Everything is working great!! Thank you!


In a nutshell:

Follow cwa2's instructions for deleting the iTunes 11.4 files.

Follow enee's direction to delete the MobileDevices.bundle

Follow Zak's link to download a copy of iTunes 11.3.1
"

For me, I still have one laptop that has iTunes 11.3.1 and only it doesn't screw up the sync.

 

[VelvetElegance]

This worked..for the most part. It left my desktop unable to display folder icons, but at least I can sync my iPhone now.