They're not breaking it on purpose... or "blocking" it.
You have to realize that I edit specific parts of the game's memory. When they edit the game and recompile it, it's going to have a different memory layout. This is going to cause my fixer not to work until I update it. It's just a side-effect of them updating their game.
It's a good idea not to try and use it when you know the game was updated, because there is a 99% chance that it's not going to work anymore, or crash, or possibility even trigger a bluescreen. :)
SP might work still because they only updated the MP executable. They are two separate .exe's afterall.
Yer i know dunno why i said that :P
Was my first thought though as the game just crashed instantly.
Thanks for the quick fix btw! Couple of hours on multiplayer with a single screen is just awful.