iTunes 12.2.1 won't sync
Since upgrading to iTunes 12.2.1 I cannot sync my iPod 160GB Classic. I am running a current update of Windows 7 Professional, the software on my 6th generation iPod classic is 2.0.4. Everything worked fine until the last iTunes update. I added a bunch of music to my library and then tried to sync only to discover that I could not. When I connect my iPod to the computer I get the "Connected" message followed by "Synchronizing" and then "OK to Disconnect" all within 15 seconds (this is on the iPod screen). Shortly thereafter the device pops up in iTunes and I can click on Summary, Playlists, etc., and all looks good; but when I try to sync it, I get an error message saying "Cannot sync **** the disk is not available" if I click sync again I get "Cannot sync **** because the device is not found", yet my device still shows up in iTunes.
I have tried uninstalling all Apple software and reinstalling it but the problem remains. Anyone have any suggestions?
Thanks
iPod classic, Windows 7