Error Running Bursting Definition using Book

Summary: Hello. I have successfully created a Report Bursting definition that sends each employee a report of their hours. 

As a next step, I'm now trying to create a Bursting Definition that creates a book of two reports for each employee and sends it to them. The Report Bursting definition validates but I am receiving a message that says "The bursting operation has failed."

The Reports are copies of the original report that ran successfully. I am using a attribute to select the employees. The Book I created has "currentpov" selected for the two Reports. The batch definition is using the same attribute as the reports for the employee selection.