I have a smiliar issue
I am using Ubuntu Linux 15.10 and I've already tried the following things:
Using OpenJDK Java or Oracle Java
Using different Display Drivers
Redownloading the Modpack
Using different Versions of the Modpack with the result that when i join a...
I'm still have a Problem with MCPC+ and Power suit after upgrading from FTB Ultimate 1.0.1 to FTB Ultimate 1.2.2
Everything works success, but now when a user will fly with PowerSuit he will be kicked
Has anyone help for me?