Hi Guys, I'm trying to figure out whether this is a problem with my machine or not. I'm trying to use the glutesselator with Tao and every time I get the following exception: An unhandled exception of type 'System.Runtime.InteropServices.MarshalDirectiveException' occurred in tao.opengl.glu.dll Additional information: Array size control parameter must be an integral type. This even happens when I'm trying to run the pre compiled Redbook Samples that ship with Tao. Can someone confirm whether this happens to them too or any ideas about how to fix it would be really appreciated. Kind Regrds, Chris