dragging tracks into playlists/ within playlists suddenly a problem (itunes version 12.1.2)
I updated to 12.1.2 april 15 (its may 4 today) and literally all of a sudden this morning I cannot drag and drop any tracks into playlists, within playlists, or to devices. I can add with the right click menu option but cannot drag. I have OS X 10.10.3 and I have not made any changes to the operating system or computer. I searched google and the itunes forum and can't find any explanation that applies to my situation. Why is this happening and what can I do to fix it as quickly as possible?
MacBook Pro, OS X Yosemite (10.10.3), itunes 12.1.2