Have you tried this ??
Uninstall 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
Also if you are within your 6 months of purchasing limewire you will not loose your Pro and won't be billed again...But if you purchased Pro more that 6 months ago and it was a 6 month membership you will...
I'd suggest backing up your Pro version...Save it to My Doccuments and re-name it Pro 4.14.10, that way if anything goes wrong you will still have your Pro installer to fall back on...