If you are still having issues with this, I had the same problem running win xp sp2. I copied the DCS_Updater.exe from the \Documents and settings\Username\Local settings\Temp\DCS to \DCS World\bin folder after removing the file of the same name and it worked. The paths may be different in later versions of windows. I'm still having trouble updating to the latest version with it, tried everything in the forums. This will just let you run the game with the latest updater file, they are still having trouble getting it to update though....WTF
