There should be fixlets that allow you to upgrade BESConsole versions. They’re in the BES Support. If you run it on the endpoint where you’re trying to connect through the console, you should hopefully resolve the problem you’re seeing.
PS… this problem happens because the server you’re trying to connect to has a different schema than what your version of BESConsole.exe is expecting, and BESConsole.exe as I understand it does some caching when you first load (hence the really long initial login spinny icon stuff)