Scotty

Hey guys, i need help. I have a downloaded version of arma off amazon. And im in the 10th mountain and i was installing all the mods i need for my unit. And i finished downloading everything using sixupdater, so it does it itself. So no files in wrong places its just that when i try to open arma 2 oa, it goes to the rectangular box and then says this "Data file too short 'common\wheeled2.pbo'. expected 99569462 B, got 83298356 B" Does anyone know how to fix this. I DONT HAVE IT ON STEAM.

This happens to me, but i just re-installed. and it worked

thanks for the help!