The game can't find all files it needs. Please check whether ra2.mix really is in the MO folder.
Other than ra2.mix and the files mentioned in the install guide, are there any other files I need?
EDIT: Tried the game after moaking sure the ra2.mix file was in the MO folder, and now its just saying 'failed to initilize. Please reinstall'.
What a god damned trainwreck of a mod.