A few weeks back I tried running limewire (which up to this point worked fine), and recieved an error message regarding invalid/corrupted files. It suggested reinstalling the program, so I uninstalled Java and Limewire and then re-downloaded them. When I tried to run Limewire I recieved the same error message.

I don't know if it helps but the following is an excerpt from the message that I thought might be useful.

java.lang.RuntimeException: java.io.IOException: settings dir not writable