And MSVBVM60.dll error can come up at different times in QuickPOS but usually when you are accessing the product list in the database.
Answer
More often than not it relates to a discrepancy in the product list or registry. For example in the product file it is easy to make the mistake of entering a barcode in Custom Field 3 when QuickPOS is expecting a price. QuickPOS then tries to calculate the GST on this 13 digit number and crashes.