LOL you guys have no idea how addresses work. They are not bugs the coder just found the address to the main character of the game. You do need to be the host for the trainer to work at all, but even then you need be the main character. Some times you spawn as another character and they have the addresses that the money ect works for.
I am still using this as of 5/20/2013. I am quite sure that TAC/VAC have still not caught onto this. But, as always I'm still being careful with it. I thought I might say however, the "No Reload" is a little buggy. Sometimes it works, others it only works on a dual wielded gun.