Please ensure that you install both parts of the mod into the correct folders, there are instructions for this on installation.
If you use Vista or 7 you may need to turn off your UAC in order to install correctly.
The following pic's are still valid for the 1.1 version. If your install does not look like this then you did not follow the installation instructions correctly.
NOTE, if you use program files(x86) for your default install of M2, then that is where the mod should go as well.