I tried the 3d video tutorial and all went well until I tried to change the color in the viewer with the SURF command. I tried from the Properties dialog and the Dash Board. After I chose the new color and clicked 'OK' the icon changed back to the checker pattern and the color never changed after regenerating the view. I see no specific error in the console.
I also tried to add a +SURF command to the sheet, but got an error that it was not attached to the line and I tried to attach it multiple times and it appears attached when I look at it.
Can't figure out what is wrong.
Am using Medusa4 Personal v 5.1.2 Build 15842 on Linux (Mandriva 2011)