I get the following message when I save a workbook:

A formula in a cell (Name:[Book1.xls]CO3POS!ResetSheet) could not be
converted because it contains a function that is not available in the file
format wo which you are saving.....

I have a macro in Module1 with the name ResetSheet but I do not have this
referenced in a cell on the CO3POS worksheet. How can I resolve this?