Dead Rising 2: Off the Record Cheats
I'll try downloading the skidrow release of the game, as far as I know that's taken from the retail copy and see if that works.
So something within the full version of the trainer is at fault.
the promo doesn't rely on code injection like most of the other options do. therefore likely something is blocking the trainer from injecting code into the game space.
just as pwizard said.
please notice that if there was a huge problem there would be multiple posts of this not working. something on your computer is 'protecting' you from malicious software whether it is your Antivirus, anti malware, your firewall, etc.
The only other problem is that you have the wrong version of the game.
firewall and other security software.
on trainer and game.
version and distribution.