I believe there has been an update today (09/10/2012) because my steam download some more stuff for payday. Although im not sure if its an update, all i know is the latest trainer does not work, it just crashes when i go to play a game in single player.
EDIT: forums.steampowered.com/forums/showthread.php?t=2191958 A link to patch thread, patch info is at bottom.
Right, there is a new update 1.15 But you can still enjoy this nice trainer... 1. Switch automatic updates off. Hope you did it directly after downloading the game months ago. 2. Make a copy of the folder "payday the heist" 3. In case of update, allow it 4. Bring back the copy, but still keep a copy