iTunes will no longer update iPod classic
I am using iTunes 12.12.2.2 with Windows 10, 64 bit home. I have changed nothing on my PC or iTunes installation.
I have two iPod classics and iTunes recognizes them both. Until a few ago I could connect both devices to iTunes (one at a time!), and select "Sync only selected playlists, etc". Now when I try to sync either iPod it appears to be syncing, but in only syncs the 8 MP3 tracks prior to track 10. I get the following errors as shown below, and iTunes crashes. I can only close it using task manager.
I have done several factory resets on my iPod 4th gen, I have rebooted my PC, no change.
I have not reset my iPod 6th gen, instead I connected it to iTunes, again selecting Sync on selected playlists. iTunes brings up the list of what has been previously selected to sync. iPod has around 20gb of space. In iTunes if I then try to add any playlist MP3 file, iTunes tells me I am over the iPod storage capacity, by more than 52GB. If i deselect that iTunes playlist file, iPod storage returns to normal value, i.e, 20gb free space. Track 010, is no bigger than 10MB.
I am convinced the issue is with iTunes, and not a fault of either iPod.
Thanks for any advice.