Help appreciated
Brand new lm4sg board. I made room
By deleting prime mover and other files. 
I’ve tried to copy over a new ult prime mover. It won’t copy.  After attempting for a while it gives error message. 
I then tried copying the same engine but in the older non ult. Same thing. 
I’ve tried two different computers that I’ve used many times for this before. 
I can get other sounds like horn or bell to copy. 
Thoughts?   My best guess is that the original file didn’t fully delete so there’s not room.  I say that because the deletion happened pretty quickly.