Hi there, sorry to bother you with another question lol, but you're the only person who I know for a fact will know about this...
I fear I might have overwritten some un-free space accidentally somewhere - either in the evolution stone routine, or the evolution routine itself, idk.
I edited in YAPE for Eeevee to evolve into Espeon/Umbreon with Sun and Moon Stones respectively, but when I try to use either stone on an Eevee, it starts to work and then stops, with the "Huh?" message, as if the national dex isn't enabled yet, although I changed the evolution restriction in a hex editor etc. Evolving any other Pokémon with stones seems to work fine, though, so I don't actually even know where the error is... have you any advice on how I could find out what the problem is or where to look for errors in a hex editor or something?
Thanks for reading and sorry if the answer's really obvious =P