To make the scene smaller, I deleted everything except the head and removed a lot of the data like posemorphs, etc. The problem is still there so there should be enough to use to check the issue. Just check ON Ornatrix at the top of the list and the character will vanish.

I was mistaken....it isn't just the character. Everything disappears. Lights, geometry, etc. If I make a new parametric object, that will stay visible. 

It's very possible it's related to my character object, because I've had some scene weirdness when deleting polygons. But in this case, Ornatrix causes the problem.

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Attached Files:

Test+for+Jeordanis.c4d (3988791 bytes),

That fixed the viewport visibility, but the character still won't render with Ornatrix on.

I'm starting to think that the problem may be my geometry. It was imported from Softimage from a very old project and the polygons have behaved weirdly since I've been working on it. If I delete any geometry from it or make modifications, everything turns into a mess on screen. I'm going to start over with a new character.

Jeordanis, the problem was R24. I went back to R23 (and the scene was backwards compatible) and the problem doesn't exist anymore. 

Actually, there's a lot of problems overall in Cinema 4d that don't exist anymore when going back to R23. 

There were some overall problems with the c4d gui (you can find a post about it on the Redshift forums). Panels and icons would disappear and also sometimes the viewport would freeze and not be viewable. 

r23 doesn't have those issues. r24 definitely does, so I stopped using it.