Sorry, I don't know the specifics of GuitarMatty.....but try replacing   BasicEffect in your foreach with Effect. Chances are pretty big that your model uses custom effects. -Daniel 

Found the issue.....actually by inspecting the XSI XNA Sample. In case some other Newbie came across, or will come across the same confusing thing doing that tutorial.....here's how to fix it: What the mentioned tutorial for XNA2.0 is missing, are the following statements in the Draw ...

Have you configured to use Crosswalk as the ContentImporter and ContentProcessor in your project? ...and did you make sure to add the references of the XYImporter (or whatever the name might be) and the XSIXNARuntime DLL to your Content Project and the XSIXNARuntime to your Game-Project? -Daniel

Hi all! ...I haven't done any XNA for about a year now. Last time I worked on it, it was XNA 2.0. To get quickly back into it, I started out working my way through the Digital Tutors Tutorial (Shader Pipeline with XSI and XNA) (which worked just fine a year ago with XNA 2.0). To start out, I installed Crosswalk 3.3 and the XSI Plugin ...

That's correct. I started out with the TerrainEditor also,  but didn't get it to work right away and I didn't like the fact that one has to take the Terrain size into considerations when calculating the texture coordinates or vertex position. There's probably a more elegant and/or easier way to do it, but this is what I ...

So is there some sort of rule, when to use which approach? There must be a reason, why BoundingFrusum.Intersects doesn't work in my case, isn't there? -Daniel

The bounding spheres are transformed here.... if (node.Visible)             {                 BoundingSphere transformedSphere = new ...

Yep true...sorry about that.....I am using BoundingSphere everywhere in the SceneGraph.......in case this makes a difference  (which it of course might). Thanks for pointing that out! I do assume it should (in theory) work for both, correct? The SceneGraph code itself is from  GfxStorm.com  ....so I didn't even ...

[quote user="Byron Nelson"]You might grab the static drawing functions at http://www.xnawiki.com/index.php?title=Graphics_-_3D & render out all your boxes & frustums & see how it looks. [/quote] That's exactly what I did, since I was fairly sure that I was the problem and not the XNA framework :)  ....but it ...

That's true....but wouldn't that mean, using BoundingFrustum.Intersects returns true for less calls then BoundingFrustum.Contains(_box)!=ContainmentType.Disjoint   ? My problem is that the  Intersects results in way too many "true" results (opposing to Contains which seems to return the correct ...