Using Civi 4.7.2 (and then on 4.7.3; I thought I needed to upgrade to fix) with Drupal, I get the following error when I try to export an accounting batch to CSV:
Fatal error: Call to undefined method CRM_Financial_BAO_ExportFormat_CSV::exportACCNT() in C:\xampp\htdocs\test\sites\all\modules\contrib\civicrm\CRM\Financial\BAO\ExportFormat\CSV.php on line 68
I then tried both the Drupal and Wordpress 4.7 demos from demo.civicrm.org. I added three of the demo contributions to a new batch and tried to export to CSV. Both the Drupal and Wordpress demos white-screened.
I tried the Drupal 4.6 demo at d46.demo.civicrm.org and it successfully exported the CSV.
Did something happen between 4.6 and 4.7 for this function? Is this a bug that needs to be reported at https://issues.civicrm.org?