I recently activated 'Transaction Notives' in the store settings. From that moment a php error occured when running cron. The error message is:

Invalid argument supplied for foreach() in /home/menp/DRUPAL_SHARED_CODEBASE/modules/ecommerce/store/store.module op regel 109.

If I deactivate Transaction Notices again, the message doesn't occure.

I am not a coder, so don't know what to do.