I've just enabled ESM (Build 15220) and find that I'm unable to preview any changes to the current ESM portal or a different template. I get a "User does not have this permission" error, which is a little strange as my account is an Org admin. I've restarted the SD server, but this hasn't made any difference.

Is this a known bug, as it will be a problem once the second instance goes live if I need to save the portal every time I want to check the design.