After switching to QuickBooks 2013 / 13 we started having various problems including crashes with error code 20888 41171 preventing us from creating new or viewing old sales orders or invoices.
It looks like many people experience the same problem, so here is what worked for us: http://support.quickbooks.intuit.com/support/Articles/HOW12420
After running reboot.bat on our accountant’s Windows XP workstation and rebooting crashes with error code 20888 41171 were gone. Hopefully forever.