In case anyone is wondering why there activity wont work, I have discovered in the consist file that the engine files it is looking for have been named wrong in it. Try using Conbuilder to fix it by deleting the engines (it says it can find unit) and put in the right ones. Looks like a great activity though, and it is nice to see SVR stock being used. I don't know whether a patch is needed or whether it works on other peoples computer, but these are the mods I have had to make.
Chris