Apologies for a silly error when requesting a task that is for a collector.
Please edit the file c:\xampp\open-audit\code_igniter\application\models\m_tasks.php or /usr/local/open-audit/code_igniter/application/models/m_tasks.php
Change it from:
if ($result[$i]->type !== 'reports') {
to
if ($result[$i]->type !== 'reports' && $result[$i]->type !== 'collector') {
Please make the change on both the Server and the Collector.