I was trying to implement The Dark Years. I found the .mod file, what had happened was I'd unzipped the download first and then copy-pasted the main folder into the mod folder but missed doing the same for the .mod file. However, now I have a new problem - I hadn't downloaded the patch I need to run the mod, and, (I suspect because Steam treats buying the HTTT expansion as DLC onto Complete), when I download and try to run the patch from the tech support forum, it tells me that I don't have HTTT installed. Any ideas how to get around this?