CAN'T UPGRADE RESTORE MY iTUNES from macOS 10.11 to 10.12 why?
Been moving my highly-organized User iTunes folder (30k songs, no Apple music) to Mac desktops, laptops, and higher OSes since before System 9
never been a problem until now - the moves have always updated and restored everything, including playlists and artwork for all 30K songs and albums just like it loaded on previous machines
THE PROBLEM:
I copied my 170GB iTunes folder from working 10.11x MacBook Pro (2011) over to 10.12 Mac Pro (2010) machine and opened iTunes - no joy - OSX 10.12 (iTunes 12.8.2.3) doesn't see or load the Library like it has always done in the past
what has changed
what might I be missing
or better how do I get 10.12 to load up and restore my hundreds of hours work in building my iTunes???
Mac Pro