Cinema 4D to Zbrush: how export the mesh correctly for use in Zbrush?

[system]

Hi, there! I guess this is a beginner question, obviously^^°

I’m trying to work my way through this tutorial:
http://www.pixologic.com/docs/index.php/ZBrush_to_Cinema4D

I’m stuck right at the beginning:

Checking the model

You can double check that your UV’s have been laid out nicely with the UV check button under the texture menu. Any overlapping will show up in red

There’s the problem: nearly everything is red I made some screenshots:
First, the simple object in cinema. I just took a cube and subdivided it for this example:

And that’s what it looks like after exporting it to Zbrush and clicking UV-check:

Red means wrong…Did I forget something important?

Any tipps would be appreciated.

twoswords

[aurick]

The reason everything’s turning red is because you’re getting a lot of overlapping UV’s. It’s a long time since I used C4D, but if I remember correctly its default UV mapping methods don’t respect the UV space very well. So what’s probably happening is that your model is being mapped with a lot of out-of-range points (UV’s that sit outside the 0,0 to 1,1 space.) You’re going to need to take more direct control of the UV’s, beyond simply letting C4D assign them automatically.