I went to create an LDAP connection, filling in the first page then clicked next.
I immediately realized, I had forgotten to test "Verify Connection" so clicked "back" (Create LDAP Connection) in the breadcrumb and I was asked if I wanted to discard changes. I hadn't input anything on the screen (User and group) so feel this is being overchecked.
Workaround is to discard.
I did not check older versions of NX3 or NX2 at this time. Debug was off.