Hi, again! After loosing (some) sleep over this issue, I have found a solution! For some reason, the scene didn't like the skybox's default size (40,000). Setting the size down to 1024 did the trick. My hotspot blends nicely and I am happy again. I think the skybox image is also way too big with each tile at 512x512. I should probably get that down a notch. But for now and to celebrate I am going to play some CSS :)
Cheers, Jerome. PS: For the un-aware that's Counter Strike Source, not Cascading thingies...
