Minecraft crashes when i have hardcore ender expansion and draconic evolution in, if i firet a arrow form one of draconic's bows as soon as it hits the ender dragon minecraft crashes. I am sorry if it is not on your side, if it is not pleas let me know and i will report it to the HCEE dev.

Also if there is any other info you need let me know. :)

The crash report would help.

Never mind i found the problem and it will be fixed in the next bugfix which i will be uploading soon.