Hi, I am on a IMac trying to plat Hexxit. The problem specifically is when I press "Play" for hexxit in the technic launcher, the screen that pops up is a very very fast glitching window full of pixels and and nothing pleasant to the eye. I don't know what is causing this. nothing crashes, I have to exit the window myself to make it stop. There is no crash log or crash error, also, other modpacks load up fine so it seems to be a problem with Hexxit specifically.
I have tried countless of different installs and reinstalls of things like my java, technic launcher, and hexxit files. I am not