I’ve installed Moonwalk Agent 12_1u2.exe and selected the Gateway Agent option, Also the HCP Plugin has been installed
On the admin console I’ve selected Standalone server and getting this error when trying to add server in
 ERR_DMPROTOCOLTOP_DECODEMESSAGE_FAILED [ERR_ADD_AGENT_NOT_READY] [Agent is starting or one of its components is awaiting configuration] dmprotocoltop.cpp:386
Previously when I installed the agent on this server I selected the Fileserver Agent for migration option and this added in fine from the admin GUI also as Standalone Server and I created a policy Gather Statistics which worked fine.
The agent was uninstalled, server rebooted then reinstalled with the Gateway Agent option.
I also tried installing the Gateway Agent on the Admin server but also got the same error message