L2J Server

Ok, I set up c4 server from branches. Everything working , but when I try to login to game server I cant. Appear this error 'session key is not correct. closing connection . I changed protocol rev from 1 to 999, but the same. I am using last c4 client and system but still cant connect to gameserver. Any suggestions?

FOUND PROBLEM, LOCK

what did you do?
I found myself a client update to protocol 660 and that's all I needed

modded java

packets?