[horde] Error after upgrading to latest version

[post at daniel-pomrehn.de]

Hi,

I upgraded horde/webmail via pear from version 5.2.2 to 5.2.4.
After I login, I see the portal page. On this page I see an error in  
Mail widget "User post at daniel-pomrehn.de is not authorized for Mail"

Everything else is working. I can see calendar, tasks, filter, etc.

Cany anyone help me?

Thanks in advance

Best regards
Daniel