Error while starting the NT-3D Viewer

Hello

I've problems working with the new Release 3.0.

I downloaded all Sources (Application Framework soure is missing) and NT Binaries.

I downloaded the NT-Examples from opencascade.org/downloads/Programming Examples.

I compiled an linked (without any changes to the project file) the Application 'SampleViewer3d'

When I start the application I get the following error '"Fatal Error During Graphic Initialisation"'

This error is created by the following constructor CSampleViewer3dApp::CSampleViewer3dApp() {

try

{myGraphicDevice = new Graphic3d_WNTGraphicDevice();}

catch(Standard_Failure)

{AfxMessageBox("Fatal Error During Graphic Initialisation");} } I get this error on a new installed NT4, as well as on an new installed Win98

Regards Heinrich Kiehm