Group and Event Workflows Throw Error

Hi guys,

I am using Techjoomla's Jticketing. It requires adding a custom field to the "Event Workflow".

Upon saving, we are thrown this warning window.

"Error Saving Form
All mandatory fields are required. Please check and make sure that all mandatory fields has been added to the profile."

The same warning happens when simply opening Group WorkFlow and Event Workflow, clicking "save and close" without making any changes to the workflow. So it is for sure something going on in the workflow forms.

Page and User Workflows save without error.

Thanks for any help!
Nathaniel