When i log in into a BungeeCord Proxy, it get kicked with this message:
Now you'll think it's a BungeeCord bug. I though that too, but i can still connect running a "clean" Minecraft 1.8, so it can't be a BungeeCord bug.
I've not installed any mods and i researched about this bug, but i found nothing about this bug running MC 1.8
Here is my fml-client-latest.log
Here a screen of my Forge/Mc Version: