Fatal Error After Installation

After reading a ton of messages that were similiar to my problem, LilMexicxan146 had the closest thing to mine. I have a Mac OSX Version 10.4.5, Tiger not Panther. I was using LimeWire Basic for less then 5 months when suddenly one day I clicked on the icon to start and up popped a box that said "Fatal error. LImeWire has encountered a fatal internal error and will not exit. this is caused by a corrupted installation. Please try downloading and installing LimeWire again" I have sent emails to [email protected] but I always get a reply back saying the email doesn't exist. I have downloaded the version several times, I have turned my FireWall On and put in LimeWire as an option in the Sharing/System Preferences. I cannot update my Java for my computer says that I do not need to update. I have the Basic Version but am skeptical to purchase the PRO version b/c this won't even work. I have also gone into my harddrive icon/Library/Receipts/Install Limewire and deleted this.

What can I do now?