Having the same problem with this one as I have with past versions, in that I do everything to the letter with the trainer instructions, and when pressing F1 a message flashes up for a split second that looks like "Game Not Found!" before returning to the "Run Game and press F1" message. Tried re-downloading minecraft multiple times, re-downloading the trainer, it just refuses to pick the game up at all. This is the only trainer I've ever had that just doesn't work for me regardless of what I try :/
Before somebody suggests it....
Yes, I'm running it as admin, yes, I've tried putting the trainer in with the games exe, no, my AV isn't an issue as every single other trainer works perfectly fine, and no, I'm not a noob and I know how to run a trainer, out of the 150+ trainers I've got from here, this is the only one that hasn't worked for me.
Open trainer as admin, open game, log into game, open world, walk around a bit, jump around a bit, open and close inventory a few times, move some items around, tab out to trainer, press F1, get brief flash of message then back to "Run game" message, regardless of pressing F1 with the trainer as the active window, or minecraft.
Win7x64, 64bit java etc
[Edited by FireflyPoi, 7/13/2011 8:46:21 AM]