I agree that a new trainer is required for new updates. Steam has an autoupdate and the most recent update to Serious Sam HD took place on Sept. 3rd/2010...
This is why the trainer doesn't work anymore.
Thanks for the info though.
I should have said that Steam patched Serious Sam HD and the trainer doesn't work.
[Edited by KaZAamM, 9/6/2010 1:34:49 PM]
If the latest update was September 3rd that's probably why theres no updated trainer yet, it's only been 3 days, and the dev team are generally pretty busy. Hang about a bit longer, and there might be an update! (as long as the game's not been retired)