My software consistently gives me error message "unrecoverable error" whenever I am doing my month-end billing.  It all started in April when I started using the QB email option to send out invoices.  I have had support and data services working on this and to-date, August 29th, I am still crashing.  I figured it took me an additional 6 hours to do month-end invoices.  I don't know what else to do.  This is ridiculous!