After upgrading to SGOS 6.7.x attempts to launch the management console fail
Error connecting to SG
This issue can be caused by attempting to launch the ProxySG management console from a browser configured to use a proxy. Launching the management console via an explicit proxy is unsupported. In earlier versions of SGOS this would often work, but the same failure has been seen on occasion even with earlier versions of SGOS when the browser is configured to use a proxy. SGOS 6.7 is less tolerant of this unsupported configuration and attempts to launch the management console via a proxy will fail.
Verify direct access to the proxy in order to successfully launch the management console or Java Webstart Launcher.