Issue
When creating a new workflow in the Nintex Workflow Designer the Template dialog window might be missing all default templates.
Resolution
Re-activate the Nintex Workflow Site Features:
- Go to Site Actions > Site Settings.
- Select Site Features under Site Administration.
- Deactivate the Nintex Workflow Site Feature.
- Once deactivation is complete, re-activate the Nintex Workflow Site Feature.
Additional Information
This is caused by a missing or corrupt .aspx page which presents the Workflow Templates to the Workflow Designer.