QUESTION
I've been exporting my data to Excel, but now it won't work. All I did was format some data in Excel. What is wrong?
ANSWER
When exporting data to Excel you should always allow QC-CALC to create the Excel file, or at least the spreadsheet. QC-CALC is sending data to the columns in Excel in very specific formats (numbers, text, and dates). If the format of the spreadsheet is changed, then QC-CALC may no longer be able to send any more data.