I am running Excel 2007 German, when I select a model and click on the "Calibrate" icon, the excel solver does not pop up, instead I get an error saying that Solver can't be found. I can use Excel Solver manually, but NumXL can't.
Also, I checked my Excel version, I am have the latest service pack installed (i.e. SP3 MSO (12.0.6662.5000)). Any Ideas,