Thank you for the update. If disabling the command blocker fixes the problem, I suspect you may have another applet installed that is blocking the send event. If you send the config info mentioned above to email@example.com we can confirm this for you.
The command blocker is an integral part of Formativ in that is used by certain solution to block commands in GroupWise. Disabling it will affect any applets that use the feature, which may result in unpredicable results.
The best way forward is probably to send your configuration information and we’ll take a look.