Can't build a database

[Tonygdj]

I uninstalled and reinstalled hoster several tilmes. I changed the folder it was in - no good. I re installed and went for the default folders no good. Before doing that I deleted all the kma files from my "Songs" folder because some of them were compressed. Then I copied some kma files from my external hard drive into the "Songs" folder - none were compressed and it still gives me the same error message when I try to build a database. What do I do?