I have an Excel worksheet that has been developed by a 3rd party. Management wants me to publish it to our Intranet with Interactivity for all to use. My issue is that when I do publish it, one of the formulas contains the YEARFRAC function, which I believe is part of the Analysis TookPak, and is producing the #name error on my published web page. Can somebody tell me if it is possible to fix this error? Am I doing something wrong or is this just a limitation with publishing from Excel?