Thank you for the support Michael.

You may be right with the memory problems. When running Mplayer to see steph3D tutorial at the same time than Moi I have again the same problems.
With Mplayer closed Moi works like a charm.

The log shows a repetion of those lines:

.\Direct3D.cpp 583: CreateSwapChain failed hr = -2005532292
.\Direct3D.cpp 305: CreateDepthStencilSurface failed hr = -2005532292

I will check for system upgrades. The resizing of the screen is still somewhere I think the trigger of the bug.
I hope that the physical 32Mo limit of the M200 is not the only reason as it's a common machine and most tablets have rather restricted 3D acceleration hardware.