I hope this is the right forum. I couldn't find a better place to post this so here is. If not, my apologies.

I am getting a "Non 7z Arhive error messge when I first double click to launch the installer .exe file.

On install of MGSO2 when I double click the installer, it gives me this message when I choode the :C/Morrowind folder to install it into. I thought I did everything right.

C++, Java, DX 9.0c, .net 4, .net 2, Morrowind, Tribunal, and Bloodmoon all installed in /C/Morrowind folder
Have Morrowind set up to run as Admin, and set the Installer file to also run as Admin.

Windows Vista 32 bit.

Please help. Thanks.