Upgrading from SB/XA 6.1.2

When upgrading a communications server to SB/XA 6.1.2 you may encounter the following error;

There was a problem retrieving the administration server details from the middle tier. The cause of the problem is Could not find endpoint element with name 'wnn' and contract 'ISbPlusRuntime' in the ServiceModel client configuration section. This might be because no configuration file was found for your application, or because no endpoint element matching this name could be found in the client element.

If you do, the configuration file for the communications server needs top be deleted. On Windows 7 the file can be found in the following location;

Windows\System32\config\systemprofile\AppData\Local\Rocket Software

The file is called SBXAComServer.config

Delete the file and restart the communications server, everything should work as planned now.