LimeWire was working for me fine for months until earlier today. The load screen comes up, but then I get the message that "Your save folder is not valid. It may have been deleted, you may not have permissions to write to it, or there may be another problem. Please choose a different folder." I tried installing the latest version, but I'm still getting the message. And if I can't get LimeWire to start, how do I choose a different folder?