After upgrading to version 3.0 and applying the 3.00.06 update, I am still getting errors where the previous version had none.
Currently, having set up the formula etc, on the first CalculateSheet I get
'Calculate error on cell' which has the following formula
((-A1*A2)+A3+(A4*A5)+(A6*0*(1-A7))+(Erate*(A8+A9)))/A10
where Erate is named cell with another formula. It's quite a complex spreadsheet, but was working ok with version 2.0. If you need an example of the spreadsheet, let me know.