Looks like it's fixed now.

When I want to add a server to my favorites I get the following message:

Cannot update favorites list:
This account does not have rights to preform this action.
(You cannot use favorites)

What is going on?
2 other players had the same problem?

Well I had the same problem with my new map. Server crashed totally (not even an error warning). I found out what the problem is. The problem occurs when you add on object from the item mode (f4 in the editor) to an outdated server. If you update your server to the latest version (24 july) it will w...