Invalid GUID?

[Countless]

I'm trying to make myself an admin on my own server using TJW's , so I type "/rcon MyRconPassword !setlevel Myname 5"

And yes...I replaced myrconpassword and myname with my actual rcon password and actual name, and it gives me the error, "invalid GUID"

Not sure what to do...

[PwNz!]

You need a guid to get admin -.-

[Countless]

Well, yeah I kinda assumed that....so how do I get one =\

[Caveman]

Same place you got TJW's

[Countless]

Well what exactly do you mean.....?

[next_ghost]

Replace your outdated client executable with one from http://trem.tjw.org/backport.

[Countless]

Yay! Got it working now, thanks guys.