What do you see if you go to explore > nDepth? Are you getting a red band that says something like "username must be specified"?
If so, it sounds like you've been hit by an issue we've encountered a few times with the upgrade. Rebooting your LEM appliance will fix it (has to be a reboot, not just a service restart). Either ctrl+alt+del to soft reboot, or use the advanced configuration console on the virtual appliance (type appliance, then reboot, and confirm prompts).
If that's not it, is it only a problem for this node, or does it happen for other nodes as well?
Looks like rebooting the appliance fixed it, thanks.