It wouldn't be a pro version you have, it would still be the basic..
Why this happened to you, I'm not real sure, what I do know is that limewire want everyone updated to their latest version and I guess they are resorting to this type of trickery know...
Many forum helpers here don't agree with what has been happening latley, regarding the update...
Onto your problem...
Try uninstalling all versions of Java from the add/remove programs and then re-install the JRE 5.11 offline version....
Archive: Download Java 2 Platform Standard Edition (J2SE) 5.0 Update 11