I use a plugin called The Events Calendar (http://tri.be) that uses custom post types and I'm having a conflict with the two plugins. Specifically, the Submit to Workflow button displays even though I'm administrator.
Also, any events (posts) that are created and submitted to the "Approval Workflow" show in the ../wp-admin/admin.php?page=approval-workflow page. With this I am unable to approve or remove these items. What can I do to remove this growing list of Event Post Types? If I "compare changes" regardless of who created or last edited/revised the post I always get "Revisions Identical" and a perpetual notification appears that the item is currently in the workflow.