Hello Derek,
Thank you for the provided details. As we can see, the custom command has just a single parameter, while the form actually has at least two entry fields. Additionally, the error references using adm-InitiatorDN while it is not present in the script. Please, provide us with all the possible details regarding the workflow you have configured (Web interface actions, custom commands, business rules, etc.). If you made changes to the script from the repository, please, post the updated script here or send us (support@adaxes.com) in TXT format.