I downloaded a trial version of Add-In Express, and open an Excel from PowerPoint. I set in the Add-In to catch a SheetChange event. For some reason the event is not fired, or at least my code in it is not executed.
Strangely enough, some other similar events are not fired as well, e.g. WindowBeforeClose, AddinBeginShutdown.
The breakpoints in the MS Visual Studio are not considered as well...
So, what Im doing wrong ?