I'm getting the following error when trying to access newsletter issues (Content Management > Newsletter Management > Issues)

user warning: Unknown column 's.sent_subscriber_count' in 'field list' query: SELECT DISTINCT n.*, s.s_status, s.tid, s.sent_subscriber_count FROM node n INNER JOIN simplenews_newsletters s ON n.nid = s.nid WHERE s.tid = 1 ORDER BY n.created DESC LIMIT 0, 10 in /home/content/b/e/s/bestates/html/pages/sites/default/modules/simplenews/includes/simplenews.admin.inc on line 52.

Here are the Simplenwes modules I have installed:

  • Simplenews 6.x-2.0-alpha4+2-dev -- (enabled)
  • Simplenews action 6.x-2.0-alpha4+2-dev (enabled)
  • Simplenews on register 6.x-1.0 (disabled)
  • Simplenews rolls 6.x2.x-dev (disabled)
  • Simplenews Template 6.x-1.0-beta3 (enabled)
  • Simplenews test 6.x-2.x-dev (disabled)

Now I can't see any of the newsletter issues I've sent in the past, nor can I send any newsletters. PLEASE HELP.