OpenX Manager Didn't Create its Database Tables?

Hi,
I'm trying to use OpenX Manager with a brand new installation of Drupal 6.8 and the latest version of OpenX 2.6 and whenever I try to do anything with the module (import data from OpenX, create an advertiser or campaign) I get errors like the following:

user warning: Table '[my_database_name].openx_manager_campaign' doesn't exist query: SELECT COUNT(*) FROM (SELECT node.nid AS nid FROM node node LEFT JOIN openx_manager_campaign openx_manager_campaign ON node.nid = openx_manager_campaign.nid WHERE node.type in ('openx_campaign') ) count_alias in [path_to]modules/views/includes/view.inc on line 697.

Did I do something wrong? Is this a bug?