Create Post Capacity not Working

Hi.
This plugin seems great but I can’t make it work properly. I created a new Role with the capacity of creating new Posts. Checkbox is checked at the Capacities page, the user I am is with the proper Role assigned, but I still can’t create a new post, it opens an empty page instead. It doesn’t seem a cache issue, since another changes I made for testing purpose work fine.

Any tips?

Cheers,
Eduardo Capella.