Update to vb 4.2.2 caused Article Section error?

[Haponing]

We updated to vBulletin 4.2.2 and I was trying to delete an inappropriate post in our Articles Section. But when I clicked delete in the editor, this error came up:

Warning: Declaration of vBForum_Item_SocialGroupMessage::getLoadQuery() should be compatible with that of vB_Model::getLoadQuery() in ..../packages/vbforum/item/socialgroupmessage.php on line 261

Warning: Declaration of vBForum_Item_SocialGroupDiscussion::getLoadQuery() should be compatible with that of vB_Model::getLoadQuery() in ..../packages/vbforum/item/socialgroupdiscussion.php on line 337

Did anybody else encounter this? What could be the cause for this error?

And also, how do you backup the forum database? Like storing all the posts, member info, etc in a file?