valve make some silly "updates" sometimes, updates that cripple mod's in the process. It's very poor I think. What's the point of having an SDK if you keep changing it. I'm no expert, and I might be miles off with my ideas here, but I gather that's the case from visiting forums to get help to get mod's working after steam releases! Such a pain!
Having said all that, i still love the game, and the mods - it's awesome fun for me still
