I noticed some foreign text on my homepage, so I tried a restore from my backup. I now saw the following error message and I can no longer see my website or log into the back end.

An unexpected error occurred.

mysql error: [1054: Unknown column 'Pages.cIsActive' in 'field list'] in EXECUTE("select Pages.cID, Pages.pkgID, Pages.cPointerID, Pages.cPointerExternalLink, Pages.cIsActive, Pages.cIsSystemPage, Pages.cPointerExternalLinkNewWindow, Pages.cFilename, Collections.cDateAdded, Pages.cDisplayOrder, Collections.cDateModified, cInheritPermissionsFromCID, cInheritPermissionsFrom, cOverrideTemplatePermissions, cPendingAction, cPendingActionUID, cPendingActionTargetCID, cPendingActionDatetime, cCheckedOutUID, cIsTemplate, uID, cPath, Pages.ctID, ctHandle, ctIcon, ptID, cParentID, cChildren, ctName, cCacheFullPageContent, cCacheFullPageContentOverrideLifetime, cCacheFullPageContentLifetimeCustom from Pages inner join Collections