Problem with templates under campaigns

Hi,

when enabling the 7.x-2.7 version of mailchimp campaign i get the following errors in my log :

Notice: Undefined index: default_content in mailchimp_campaign_campaign_form() (line 83 of C:\wamp\www\drupal-7.17\sites\all\modules\mailchimp\modules\mailchimp_campaign\mailchimp_campaign.admin.inc).

Warning: Invalid argument supplied for foreach() in mailchimp_campaign_campaign_form() (line 83 of C:\wamp\www\drupal-7.17\sites\all\modules\mailchimp\modules\mailchimp_campaign\mailchimp_campaign.admin.inc).

When you try to add a campaign and change the template, the content area disappears, while for my template 4 sections should appear.

This problem is found on a fresh drupal 7.17 install.
With same key and template and the 7.x-2.6 version of the mailchimp module, everyting works perfect.

Anyone else with the same problem?