Thanks, Assassin 7 sent me a zip with the mission (for 4.1) and a few more which was nice. There a lot of those Tanks missions but MDF / Paladin's version was my fave. The version I have now works ok, but it was generated without the original terrain file, so lacks the roads and farms etc. I had my own modded version of it too. For some reason I can't convert them, I have converted a few others successfully and whoever made the 4.1 compatible version obviously converted it successfully. Ideally I'd like to get the original terrain file and create a new delta, and extract the original theme, but that might be require going back to 4.0 to get them, and Im not sure SB would cope with two installs.