BIG THANX TO PKGINGO!
Switched to guest, and for the 1st time, with this tool I actually successfully injected a rom into a wad!
How the hell did you know that would work, and WHY???!!!
For those who might want to know Aladdin works injected into DKC2. Might be my imagination, but I think it even looks better than using emulators.
Still having problems with the N64 part, but I´ve only tried PilotWings64 into S&P, and Excitebike. Excitebike might not be for the N64 ´cause I got an error message suggesting so, and it seemed small to start with.
Also heard some of the VC dumps from certain groups were somehow corrupted, maybe my S&P might be one of them.
Anyway, I am joyed just getting my first one to work! Thanx to PKGINGO, and the makers of course!
(EDIT) Just got an N64 inject working! Seems my copy of S&P might be bad. Pilot Wings into S&P didn´t work for me, so I tried using Pokeman Snap instead, and guess what it worked!
Enough proof of concept! I could try the old auto injector over my guest account, but, nah. This is good enough for me.