Hi, MAF.
Thank you for asking!
I can offer some feedback about
my use particular of it, though I've only used some of the features, not all of them.
It may help track down an issue somewhere in any case, so happy to provide it.
I'm on the latest patched Origin version of the game on PC, 2 Nvidia GTX 580 cards in SLI.
I'll first list those items I have
never used:
Numpad 1 thru Numpad 8 - Never used these, don't need them, and am
also confident that I have never accidentally turned any of them on.
What I
have used:
F1 thru F7 work perfectly, but I wonder if it's one of these functions that may be causing problems, which some users have reported in other areas.
F8, No Horse Fear, has
never worked for me. I've toggled it many times, it says it's activated/deactivated, it lights up in the trainer as it should, etc. But when attacked the fear meter appears and reaches the end, then I get thrown off the horse.
F9 worked for me, but I made sure to get to level 2 first, and then used it only
once, turning it off immediately after I saw I had 9,999,999 coins.
F10 didn't work for me, but I only tried it once. Didn't need it either, really. Buy one or more major items from the merchant, sell it back, buy it again, sell back, buy back, etc. gives the merchant all the coin they need. I didn't try F10 further.
F11, Infinite Durability, works perfectly.
F12, Infinite Items...... this one seems to be a bit odd. It
does work, in that, when activated, items counts never go down, but that's
provided you have at least
two of an item. If it's an item with a count of one, it gets used and is gone from inventory. And I think this may be involved in the issue where, once you craft e.g. a single mutagen, you can't make another as it says you already have this item. Same with potions and some other things. But its inventory count is
one. You should be able to continue to get more of the same, but can't, since it says you already have it.
EDIT: It acts as though one part of the game thinks you have the "maximum number" of that item in possession, but the actual inventory count is still one.
Numpad 9, Add Exp, works perfectly, as long as you
follow the directions (lol) and wait until you get to level
2 by yourself. (And there really isn't anything you'd
need to have before getting to level two on your own, anyway.)
Numpad 0, Add 10 Skill Points, works perfectly as well, with the same restrictions; you have to be level 2 to use it.
Hope that helped, and thanks for the work on the trainer, it's appreciated!