Mehrune's Razor Plug-in

I downloaded the Mehrune's Razor plug-in and the latest required patch. Installed the patch but I get an error when I try to install the plug-in (error 6002 whatever that is). It tells me to check my internet connection, delete temp files and get out of any programs running in the background. Doing that has not helped. I've installed three of the earlier mods without any problems (Theifs Den, Horse Armor and Orrery). The Mehrune's Razor mod tells you that you must have the Version 1.1.511 patch installed for it to work. Has anyone else tried to install this mod? Were you successful or did you have problems? The only programs I have running in the background are McAfee AntiVirus/Firewall, AOL for my internet connection and a printer on standby. In the past whenever I installed a plug-in the McAfee would ask me for permission to allow the plug-in to communicate with the internet site and I would simply give it access. Any help or advice would be appreciated.