Problems after upgrade
 

After some strange things had happend last days.

1. Autoupgrade from stable version 5.50 into beta 5.56.2
2. Now I see downgrade from 5.56.2 into "stable" 5.55.2

But I've got errors every time I've tried to access mailboxes module got error

The 'Mailboxes' field has invalid value.

What happend?

Problem solved, there was some strange

drwxr-xr-x 4 root root 4096 May 2 06:30 dar#tar/

after converting backups