Can't join dayz server

[xazerf (DayZ) 0]

Today i bought arma 2 and OA. I installed them + dayz mod + dayz commander.

After many attemps I joined a server. Few hours later I tried to do same thing, but dayz commander is showing me that server has 10000/10000 ping when my friend can join it without any problem.

When in joining it, server kicks me in less than 0.5 s after it. im trying to join server manually but I got this error every time:

 

http://scr.hu/2h0y/dsrn4

 

I can't join this server because mission base on that were deleted?! I verified both games and joined this server before so it's imposibble that any file is missing.

I always had a problem with dayz commander but joining server wasn't a problem.