I have now figured out where I was going wrong with the trainer and it is in the instructions (doh), so my apologies.
It just works a little different to the earlier versions and that is what confused me with it.
Essentially it is where you have to be on a different character when you select, then onto the correct character before it say deactivated, before finally pressing + or - that was catching me out.
Thanks for keeping up the good work with these cheats.
ya took me a long time to understand what you just said.. and get the trainer to act right for me. but what a great trainer it really is.