webmail error after updated 8.0.0

[NetNappy]

I recently updated all packages available for plesk8.0.0 (not 8.0.1), but when I accessed the webmail via https://webmail.domain.com, the left menua show the below error in the squirrel mail. By the way, I don't use webmail for long time, but I remember that horde mail is used instead of squirrel mail, is that right? If yes, how do I get back to use Horde via webmail again..

Error
+++++++++++++++
ERROR: Could not complete request.
Query: CREATE "Sent"
Reason Given: Invalid mailbox name.
++++++++++++++

Thanks in advance, guys

 

[Traged1]

We are also getting an error like this:

There was an error deleting messages from the folder "Inbox". This is what the server said: [TRYCREATE] Mailbox does not exist.

 

[rviradia]

for public record:

http://kb.swsoft.com/article_50_1155_en.html

Originally posted by Traged1
We are also getting an error like this: