When you use SharePoint list attachment SmartObjects in an email task in a workflow, the attachments are duplicated in the email sent.
- Ensure you have K2 Five (5.1) installed.
- Get the K2 Five (5.1) FP11 from Regional Support.
- Install the K2 Five (5.1) FP11 to apply the fix.
- It is recommended to refresh the browser cache.
- Start a new instance of the workflow.