I have tried searching for multiple artists, albums, and songs. But no matter what i don't get any results. I have even un-installed and re-installed limewired. Please help!!!!

I also get a message popping up ALL THE TIME that says:
"ERROR
Limewire was unable to write a necessary file because you do not have the necessary permissions.Your preferences may not be maintained the next time you start limewire, or limewire may behave in unexpected ways."