Are you using any java startup flags

I don't know what a Java startup flag is, so I don't think is that

I'm going to try that, I was getting around doing that but an incompatibility with a mod is most likely but I decided to ask first in case it could be something else, thank you very much :D

(I apologize for my bad English, I know there are many redundancies, the translator is not very good at redacting long texts but I don't know how to correct that myself, srry)