backup not working after upgrade to 8.1.1

[c0d3x]

hello all!

i upgraded my plesk from 8.1 to 8.1.1 and made a backup of a whole client. Then i had some problems and switched back to plesk 8.1 now when i try to restore the backup made with plesk 8.1.1 i receive this errors and i can't restore the client

Failed validation of the document with external DTD /usr/local/psa/PMM/plesk.dtd. The errors are: Value

"manage_virusfilter" for attribute name of permission is not among the enumerated setElement mailuser content

does not follow the DTD, expecting (password? , mailuser-permission* , mailbox? , alias* , redirect? ,

mailgroup-member* , autoresponders? , addressbook? , spamassassin? , drweb? , custom-button*), got (password

mailuser-permission mailuser-permission mailuser-permission mailuser-permission mailbox autoresponders

addressbook spamassassin virusfilter )Value "manage-virusfilter" for attribute name of mailuser-permission is not

among the enumerated setNo declaration for element virusfilterNo declaration for attribute state of element

virusfilterElement mailuser content does not follow the DTD, expecting (password? , mailuser-permission* ,

mailbox? , alias* , redirect? , mailgroup-member* , autoresponders? , addressbook? , spamassassin? , drweb? ,

custom-button*), got (password mailuser-permission mailuser-permission mailbox alias alias alias alias

autoresponders addressbook spamassassin virusfilter )No declaration for element virusfilterNo declaration for

attribute state of element virusfilterElement mailuser content does not follow the DTD, expecting (password? ,

mailuser-permission* , mailbox? , alias* , redirect? , mailgroup-member* , autoresponders? , addressbook? ,

spamassassin? , drweb? , custom-button*), got (password mailuser-permission mailuser-permission

mailuser-permission mailuser-permission mailbox autoresponders addressbook spamassassin virusfilter )Value

"manage-virusfilter" for attribute name of mailuser-permission is not among the enumerated setNo declaration for

element virusfilterNo declaration for attribute state of element virusfilterNo declaration for attribute dns of

element domain-aliasElement mailuser content does not follow the DTD, expecting (password? ,

mailuser-permission* , mailbox? , alias* , redirect? , mailgroup-member* , autoresponders? , addressbook? ,

spamassassin? , drweb? , custom-button*), got (password mailuser-permission mailuser-permission mailbox alias

alias autoresponders addressbook spamassassin virusfilter )No declaration for element virusfilterNo declaration

for attribute state of element virusfilterNo declaration for attribute dns of element domain-aliasValue

"manage_virusfilter" for attribute name of permission is not among the enumerated set.

what can i do?