I created Approval Workflow application(.net3.0), it has successfully deployed at sharepoint server, but when executing workflow at createTask activity, the following errror has occured.
System.NullReferenceException: Object reference not set to an instance of an object. at BasicApprovalWorkflow.Workflow2.createApprovalTask_MethodInvoking(Object sender, EventArgs e)
below is the code :
sender, EventArgs e)