when i click the limewire shortcut from my desktop, this msg appears;

"your save folder is not valid. if may have been deletd. you may not have persmission to write to it, or there may be another problem. please choose a different folder."

when i click ok, it pops out a window sayin there is a fatal error.
i have re-installed numerous times, but this problem doesnt go away.
how do i change my save folder if i cant even open limewire??
someone please help me