Once it starts to play, it crashed.
Using IE9, Win 7.
I am also having the same problem with King Arthur 2: The role-playing wargame other than Heroes 6: Shades of Shadows
I follow the troubleshooting guide and still the game crashed.
I am using the version as stated in the trainer that matched the the retail version for both games.
The games crashed when I started to activate respective cheats.
What other information do you require?
I was reading something on the forum about some users not being able to update to patch 2.1.0 so go to this Link if you think it would help and try using the latest trainer if you're not doing so already (also try re-downloading the trainer, I've seen some trainers being changed even though the game was not updated).
Also make sure your antivirus or firewall isn't blocking the trainer while it's trying to authenticate your account.
I hope this fixes your issue otherwise it's just a matter or trial and error, stuff like running the trainer as Administrator, making sure you have the latest versions of .Net Framework and Visual C++ Redistributable (I'm not sure if these are required for the trainer to work properly) etc.
EDIT: And make absolutely sure you're not trying to use the trainer in any online mode.
[Edited by Xen0byte, 5/15/2013 6:10:39 AM]