Error creating the share. (...or uses a self-signed certificate)

“Error creating the share: Sharing [SomeFolderName] failed, could not find @[someUserName]@my.opendesktop.org, maybe the server is currently unreachable or uses a self-signed certificate.”

I am unable to share folders between my.openDesktop.org users, not sure what is the problem. Is it just me seeing this?