ZBrushCentral

C4D -> ZBrush -> C4D... i need help!

Hello everybody!
I’m a user of Cinema4D (Release 9.1) and Bodypaint (R 2) and i own ZBrush since a few weeks.
Now i try to ad ZBrush to my pipeline, but i got some problems.
To test all the “export/import” stuff, i modeled a simple lowpoly Fish in C4D and created the UV-Tag with Bodypaint.
Then i exported that Mesh as an OBJ with the free plugin “Riptide” and imported it as a Tool into ZBrush.
I divided the Mesh up to 5 and exported that Subdivision-Map with ZBrushs Plugin “Multi Displacement 2” with this 16bit grayscale Setting: DE-FCGK-EACADA-4d-D16.
Then i turned back to C4D and just used that 16bit Map as a sub-Div Map in C4D.
But what i get looks really bad:

![fish_c4d_render.jpg|500x392](upload://oSNm29fZLK5bo3UEGzYKmx7HII.jpeg) So... i tried to find out what i maybe did wrong... but i wansn't abble to find it out. So i need you help!! I try to give you as much information as possible, so you got my discription what i did up abpve and also here's my [C4D-File](http://www.oli4d-images.com/fish_c4d_original.c4d). And here is the riptide exported [OBJ-File](http://www.oli4d-images.com/fish_c4d_export.obj). I also shot a screenshot of my [riptide-Export-settings](http://www.oli4d-images.com/fish_riptide_export_settins.jpg) and of the [multi-displacemend-settings](http://www.oli4d-images.com/fish_ZBrush_settings.jpg) in ZBrush. Can anyone help my getting the mesh smooth? I really don't understand why i got these ugly edges. When you test it in ZBrush: You don't have to paint around... just import the OBJ, go to "geometry" -> "devide" up to 4 or 5 and export the map of that. Thank you very much for your help, Oli4D