Hi Ivan/Gunther,
I have found some more problems.
1: Scroll arrows on the borders, program crashes when trying to scroll and use the measuring tool
2:Animation speed, 2d works on both 3d and 2d, 3d speed has no effect.
3: Vertical exageration, can't adjust it fixed at X1
4:3D view , have to zoom in in 2d then switch to 3D to get nice clear view,zooming in in 3D stays blurry.

I will let you know if I find any more bugs

cheers Rod