Yeah I'm having the same problem. Only thing is I can't seem to even find the files that I have downloaded. Nothing is showing up in the library on Limewire, and the only thing I can find is what I downloaded that was incomplete. My shared files folder is completely empty. Another comment posted on here was right....Limewire gets worse as they upgrade it!
I'm also on a Mac. I can't launch any of the files I downloaded, and I can't even find them.