I have deployed a K2 project for development successfuly.  When I moved the project files across to test box and deploy it from the K2 studio in the test box, I got the error below. It was deployed successfully if I did it from the K2 Studio in dev box by changing the environment fields. However, I can't deploy the project from the same box all the time.

 1 Error(s)

Task Error: System.UriFormatException: Invalid URI: The URI is empty.

   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind)

   at System.Uri..ctor(String uriString)

   at SourceCode.Workflow.Common.Authentication.ADCredentials.AddCredentials(CredentialCache currentCache, NetworkCredential newCredentials, String serverUrl)

   at SourceCode.Workflow.Common.Authentication.ADCredentials.GetCredentials(String serverUrl)

   at SourceCode.DeploymentTasks.SharePoint.WorkflowIntegration.WorkflowIntegrationTask.UpdateWorkflowIntegration()

   at SourceCode.DeploymentTasks.SharePoint.WorkflowIntegration.WorkflowIntegrationTask.Execute()