MKS Java API - Getting wrong CmdRunner from command createCmdRunner

After installing WindChill Client 13.1.0.1 i have on some PC the problem the createCmdRunner command give me a com.mks.connect.HttpCmdRunnerImpl instead of com.mks.connect.ClientCmdRunnerImpl.

The result is this Errormessage as soon as i want to call a execute on this runner:

Connect to 127.0.0.1:31000 [/127.0.0.1] failed: Connection refused: connect

The question is now why do i get with the same code different runner on different pc?