Symptoms

An error is being raised 'Exception of type 'SourceCode.SmartObjects.Client.SmartObjectException' was thrown' when a process is kicked off.

 

Diagnoses

After investigations, the error is being raised due to a smartobject method being used in a user task to retrieve the destination users.
 

Resolution

Edit the user task that is raising the error
Remove the destination user then add it back
Save and deploy

This issue happens only after the first deployment.
The bug will be fixed in Appit 1.5