If QuickBooks is unable to open an invoice, or freezes when it opens an invoice, you are not alone.This is one of the most frequently-reported complaints that business owners voice, especially in the midst of busy times. Simply click Create Invoice and suddenly everything stops. Cursor stuck. Screen grey. There is no response. You wait. You force close. You reopen. The same thing happens. At first, it is a little random. In time, it begins to affect work. Invoices get delayed. Customers a...