Is your trainer file named a9 or ac9? make sure you disable any and all security apps like antivirus, etc. Try running the game first, starting the level, then ALT+TAB, start trainer, ALT+TAB back to game and press F1 and see if same thing occurs.
If we can't reproduce it and none of the other thousands of members that have downloaded it are having issues, it's hard for us to correct it.
I don't think we have the previous version any more.
It's named a9, the previous one was ac9, tho i don't see how that would be an issue. I've tried running the game, alt tabbing out and restarting the trainer, no dice.
Ah well, if no one else is having an issue then it's obviously on my end somewhere. I'll fiddle somemore and see where i get.
Thanks for your help thus far, much appreciated.