Cluster error when trying to apply server settings

[#1]

Has anyone ever gotten the error "A cluster node has been added, please enter the control number" when trying to apply changes to the server settings?  I only have a single stand-alone server, so I don't understand where this is coming from.  Any help would be appreciated.

[#2]

Hello pkrolicki. Did you manage to sort out the problem ? It begun to occor in one of our SBE servers where definitely NO "Cluster installation" was ever even tried.

Thanks in advance

[#3]

Hello pmbinnnovfb have you tried to solve the problem with my solution at the top of this  discusion?

[#4]

Hello Pkrolicki, We do know that cluster licenses are "different"; Now this is an "old" production server that has been running for almost 3 years, always with the up-to-date QVserver version, and all of the suddenly it begun to show this message.  The solution was a "full uninstall" and then a fresh new install.