Running MC13.0.171 on Win7 x64 RC1 and having problems with drag and drop. Sometimes I can drag and drop a music file into Playing Now but other times I can't. The times I can't, I get the circle with the line through it indicating that it isn't possible. The files are flac and/or mp3s. Other times I can't open a file by double clicking from Explorer, then again, other times I can. The times I can't I get the Windows busy icon.
I can't figure out any common condition that either allows or prohibits drag/drop. It won't work one minute then after shutting MC down and bringing it back up again it works. Why the intermittent failures?