Heyo, first I want to point out that I didn't know where to put this little request (a lot of modders don't like to see their twitters filled with requests). I don't know how it works or how it behaves, but the world crashes on startup while playing with cofhcore B3 (Only happens with the B3 version) and optifine.
I'm aware that this is not your fault and you have anything to do with this, but I wanted to know if you could try coding a version working with cofhcore B2-24.
If you do so, you'll have a radioactive cookie from my factory. If you can't, I'll just patiently wait (I'll also spam the cofhteam and sp614x).
I apologize if I did any mistakes, I've only been studying english for 12 years. (That doesn't mean I'm 12)

Sorry, I can't do that. However, the COFH team has already found and fixed the Optifine issue. It will be released with the next version. See here: CoFH/CoFHCore#38

"fixed in dev version"
Well thanks, I didn't know they were actually working on it !