i had the same problem. i went to
www.macamp.com and now it seems the old page with the programs is gone, and they are going to ressurect the program. i wonder if macamp lite was sending a message back to the creators over the internet...what do they call that...calling home?
there is still an archive of the site that i found at wiki.etree.org, and just for my own piece of mind. i d/l and archived the site and all the programs/codes/plugins to cd-r.
in any event. i trashed the original file, and re-installed, and everything worked fine.