Internet Expense Do not show CVR error message as Error

Due to CVR exception the expense report is stopped at Expense Allocations step.

But it shows error simply as NULL error (shown below). A user can not make out due to what it failed?

Is there a way to show the detailed CVR error message as it would show in other applications like Payables or Purchasing?

Is there any set up involved?

Thanks.

Anil