Some users, including me, are having an issue when Document Revisions and Advanced Access Manager are installed on the same site.
Seems that the issue is mainly with the Super-Admin role. When Advanced Access Manager is active, the Document Revision's menu item on the Dashboard disappears. This only happens on the Super-Admin user; other users with other roles can see the item on the Dashboard.
It would be helpful if the developer could check it out. More information on this issue, and other user's comments, can be found here: http://wordpress.org/support/topic/plugin-wp-document-revisions-133-activates-but-doesnt-show-up-on-dashboard?replies=5