You do not have sufficient permissions to access this page.

On our website http://wisindians.com, after signing up (Facebook login) and attempting to add a listing, this message is displayed.
"You do not have sufficient permissions to access this page."
By default every newly created user belongs to "Event Contributor" group.

The user in question is belong to "Event Contributor" group and event "Event Contributor" group has the following permissions set under "Directory Settings 2.2.3.9" page.
- View listings.
- Add listings.
- Edit listings.
- Edit published listings.
- Upload files.

Payment type is set as "Free Listing" in the setting.

Under custom press settings, for "directory_listing" post type, following were selected under "Assign Capabilities" for "Event Contributor" group

-Create listings
-Edit listings
-Edit published listings
-Publish listings