Yeah I think something is missing from the mission on the download. I de-pbo'd the whole thing that file was not in it. I had to delete the mission from my arma2 for anything to work and not get that error.
I could have done something wrong .. I have no idea.
Wish that crazy russian would have had how to instructions.
If your version works Rachel, you could zip it , or rar it up and just email it to me.