In Registry, Add a new key named "AcknowledgedRunningOnAppServer" of DWORD type at the below mentioned locations.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office Server\<var>version</var>\LauncherSettings
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office Server\<var>version</var>\LoadBalancerSettings
Set the value to 1.
Restart the System.
Now the Configuration Wizard should work fine.
Reference - http://support.microsoft.com/kb/2910363