Error PS033 means that Can’t Read Payroll Setup Files, your payroll may not be completely installed due to any communication error with the internet or configuration error. Any error like this may cause so much trouble and sometimes it can even lead you to the loss of your data or some vital information. It is always suggested that you take precaution measures, in case you are encountered with the same message again, you at least know what steps you have to take to resolve such errors. Even user can explore more QuickBooks Upgrade Errors and issue in detail .