It's both a TopoFusion and a driver issue. TF Basic's 3D works just fine if your video card can handle relatively large textures (i.e. isn't several years old).
Sounds like maybe you were using the demo for TF Pro, then bought the Basic version? The 3D code is completely different between the two versions, and Pro doesn't have the same limitation.
It's confusing, I'm sorry. Did you try updating video drivers? What video card do you have?
BTW, I am going to move this thread to the TopoFusion Basic forum, since this forum is technically closed. Please look for it there.
Thanks.