Just when you summon? or when you use?
I think u have to use another item first or else it will crash, found that out on another server, its like words of health, or something.
Have to use a Insta Self Heal, or else when u use that pot, u crash.
Its a bug on all servers, but i will see what i can do, i will test on my minilogin tomorow (used so i can beat the hell outta it, and others can still play on reg server
)