Just started working again!

I reinstalled the new version of Missing Sync and after that, Limewire seemed to be okay. I don't think it's connected, but then again, you never know. Missing stopped working properly because I was using the Tiger version. They released the new version and after the download, it started up.

Strange.

I was in Leopard to start off with.

That's good you've got it working. However, I don't see the relevance. I think you've run into a lucky coincidence, or perhaps Missing Sync is packed with something that helped your situation. After all, our errors were slightly different. Yours indicated a Java process. Mine only talks about Limewire as the process. I have never used Missing Sync, and I have no need for it. So, I think I'm looking for a different solution. Congrats on yours, though.