Last updated time: 2014-01-22 Create custom WordPress post types on the fly with an easy to use interface. Then manage custom fields and categories f
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This can be caused by having a page with the same slug as your custom post type key. The Page does not need to be published (it can event be in the trash) for this issue to exists.
You will either need to permanently delete the Page or create the a new post type with a different key.
This is an issue with WordPress rewrite. We are looking into how to workaround the issue.