Issue Description

When you use the IsBlank filter on an Active Directory SmartObject, and run the form with a dropdown control that is populated with data from the Active Directory SmartObject, an error occurs.

Error Message

The following error occurs: “Object reference not set to an instance of an object”.


  1. Ensure you have K2 Five (5.1) installed.
  2. Download the K2 Five (5.1) FP22 from K2 Partner and Customer Portal.
  3. Install the K2 Five (5.1) FP22 to apply the fix.
  4. It is recommended to refresh the browser cache.