User Role Editor Plugin – publish_posts [PROBLEM]

Hello.
I’m using the User Role Editor Plugin in WordPress 3.6.
I want that ‘Subscribers’ can publish posts of their work. But when I do that and tick the publish_posts box and try to login and post something with a test account it doesn’t work. It only works if I tick the edit_pages box aswell, but that I don’t want because they could delete work from others.
I essentially want that users can upload their work, but not edit, delete or do anything else with it.

Thanks

-Yax