Ric,
I checked the Meade 4M to see if there was any mention of the Envisage update but couldn't find any
However while checking I did come across another free download that I've been looking for - JAC Virtual Crosshair - it puts a crosshair over any open app - so you can position over a star in the live envisage window as a reference point if your alignment isn't quite right to ensure your stacking begins from the same point each sub. Also can be used for drift aligning with envisage/DSI.
Thought you might be interested...
Peter