I'm having the same problem. The game seems to be re-setting the ammo periodically. It works for first few seconds and then goes down to normal clip and I have to reload again. Also, when I hit reload the game freezes for 5-6 seconds and sometimes it crashes as well. Any ideas of what's going on?
I'm wondering if there was an update last night, because up until this morning, it worked fine; however as of this morning, now the latest version of the trainer just crashes the game any time you activate it.