Gravity Forms User Roles Access

I've had some code in my themes functions.php to allow authors to export gravity forms and it's worked in the past. For some reason, it now isn't working.

The code I have is

//Gravity Forms User Roles Access
$edit_contributor = get_role('author');
$edit_contributor->add_cap('gravityforms_export_entries');
//END Gravity Forms User Roles Access

The strange thing is that they appear to have access but when they click the export link in the forms menu, the url they get is

http://domain.com/wp-admin/gf_export

instead of

http://domain.com/wp-admin/admin.php?page=gf_export

Which is why it is obviously broken for them. It is working for me (as an admin) Any ideas?

No other role management plugins. I'll check on the permalinks

Changing the permalinks may have helped. Let me consult with the users that are set as authors that were having this issue. Thanks

It appears the issue has been fixed by resetting the permalinks. Thanks for that recommendation.

I didn't really think the permalinks would affect the admin functions!