Cannot seem to install Limewire Pro (11.2 mg).

Installed Limewire (11.7). Then decided to purchased the upgrade for the additional instructions and less advertising, but after installing Pro it was the same 11.7 with no mention of Pro. Hesitate to uninstall BOTH applications because of the reinstall on one will take another hour. I've been working on this for more than 3 hours. Any suggestions?