"Wrong server app, cannot join"

[Scottishwarrior 2]

Hello

Great mod good fun etc, now down to whats up:

I get an arror message :Thie server is running an incorrect version of the server side application. You cannot play on this server. If you are the server admin contact DayZ staff.

I get this message multiple times, different servers.

I am using six updater to launch, but get same results when launching beta exe. I am updated to

Dayz 1.7.1.5

Arma 2 reinforcments 1.60 patch

Arma OA 94364

I am running Win 7 on a 64 bit machine, 6 core.

I have had DayZ working previously, but soon as i got beta update and the newest dayz i have had this problem.

Any help whatsoever would be great thanks

screen shot:

[attachment=1735]