here is what i noticed: when I choose the above option in the gui the program ends expectantly and returns to the terminal prompt. A reboot does not fix the issue.
When I choose "Add this host to the remote server" I can see that the server is already added.
Let me know if you have a workaround or fix.
You might be picking up a job that already has that VM added in the remote host. We don't have enough information to offer a precise answer.
Best advice: delete everything in th /tmp dir and start from scratch.