Hi Zoli,
1) I tested the XlsIOCalcEngine sample in 1.1 framework and it works fine. Could you please try running this sample and let me know the problem still exists?
XlsIOCalcEngine.zip2) Here is the sample as per your requirements (to enter a few figures into a sheet, supply a formula and get the result back into my application (ASP.NET):
calc1.zipPlease take a look at the sample above and let me know if you have any other questions.
Regards,
Melba