Hi,
With the latest beta 089 the following event no longer fires. This was working in the latest stable release.
WinMap.ExtentOverlay.MapKeyDown += ExtentOverlay_MapKeyDown;
MapKeyDown Event not Firing
It works for me with both 089 and the latest 091. Can you clean up the bin/obj and have another try? If still have issues, can you send over a demo project to us?