I have a chanesy and it is about to evolve but in the middle of evolving it stops and says "...?" Well, I mean like why? If it has the evolving screen why would it stop in the middle of evolving?@?@ I DID NOT press any button
since everybody say you have to get the national dex, but not HOW to get the national dex, I'll tell you. Catch 60 pok'emon and talk to prof. Oak. He'll give you the National Dex.
It's because Blissey is a Johto PoREPEATING REPEATING REPEATING!
IT ONLY NEEDS TO BE SAID ONCE!
Self-explanetory, this method also applies to Golbat seeing as Crobat is a Johto Pokemon. I don't know what occurs if you receive a Pokemon in a trade holding an item that would thereafter cause it to evolve (like Onix), but whether attempted evolution happens or not obviously the same thing occurs.