When I finish a map in WED then I click build map then I save it somewhere. After that I want to see all the shadows from lights that I have placed. So when I click Run Map it starts then after few seconds it show a rendering screen for a half a second and closes the window completly.

In manual it says if Run Map not running or rendering use different option its says something like GLX. So I tried all option it doesn't work. Also I tried it on 2 computers, one is really powerfull and a good 3D card. None seemes to work.

Please help solve this problem.