When using the new capability of WordPress 3.4 to Customize a Theme, if WP Document Revisions is active, the error:
Fatal error: Cannot redeclare class Document_Revisions_Admin in
.../wp-content/plugins/wp-document-revisions/includes/admin.php on line 9.
If you deactivate WP Document Revisions, the error does not appear and the Customize Option works.
Also when using WordPress SEO plug-in (Yoast), and you Add Document with WP Document Revisions, a page from WordPress SEO appears (not a blank new document).
Does anyone have a solution?