Not sure what caused this, but I can't think of any other explanation.

Tried to load Moo2 just like usual on this computer, then immediately "dosbox has stopped working".
Opened dosboxMOO2.conf and switched output from <overlay> to <ddraw> - same thing happened.
Switched to <opengl> - voila! it works.

Just throwing it out there in case someone else has the same problem.

I did a 2min test and started a new game using GOGs version on a Windows 10 computer and did some quick ten turns and it is working BUT it was looking odd when starting the game.

Sadly work on DOSBox seems to have stopped completly.