I dont think thats it...if it was the wrong MOD version. The message displayed should be something alone the lines of "This server is running 1.7.3, and you are running 1.7.2.6, please update your beta and try again". ...but, even though DayzCommander should tell you what version the server is at, you might be right. I better update my beta to a newer version than the server says it runs, and try it again.