If you are experiencing issues with the pagination of the exhibitors section, this is because you have named the URL of page ‘exhibitors’.
There is a conflict with how WordPress handles post types and the use of the wording exhibitors.
If your exhibitors page is named http://www.event.com/exhibitors change the naming to something like http://www.event.com/our-exhibitors (or whatever naming you prefer other than ‘exhibitors’) and the problem will be solved.