In working through a conversion of P4 to P5 male clothes in Wardrobe Wizard, I noticed holes in the converted clothing.  But when the originals were loaded, even just the clothes in the scene without any other items/characters, the holes are still there.  Most of the P4 clothes have these holes.

To clarify, this is not poke through when the clothes are applied to a figure.  These are holes in the clothes props themselves.

What's happening?  Have moths gotten into the files?

These holes do not appear on the P4 clothes in my version of Poser 7 content. I have the boxed version of Poser 7 with the second to the last update.

Some of those P4 clothes are built strangely, with tangled-up
facets and groups.  The original P4 renderer handled this, 
but later versions don't like it.  Try checking the "Normals Forward"
box in the material room.

Normals forward rendered the clothes without the holes, but they're still present in the preview window.

It's very odd.  When I wrote the post the holes appeared in both the render and the preview.  I thought normals forward made the holes not appear in render.  However, trying the same clothing without normals forward checked still had the holes not appearing in the rendered version.

I tried installing Poser 7 on a different computer, without the updates, the P4 clothes are fine.  Now I'm trying to copy the geometries, props, etc. from the installed original to the machine with the updated poser.

Maybe it was the content update that did this.

Yeah, that's typical.  I think the only real solution is to alter the mesh itself.

UVmapper does a pretty good job of aligning normals.  Copy the original OBJ
file so you don't lose it; take the OBJ file into UVmapper; select each of 
the groups (or materials) that has holes, and hit Tools:Facets:Align.   

If it's working right, you'll see a notice that says a small number like "3 facets inverted".
If that wasn't the problem, UVmapper will say "zero facets inverted".

Oops, my previous post was replying to your 1:59 message.

If the holes seem to depend on other things like other content,
it may be a symptom of a larger P7 rendering problem.

(Search this forum for the phrase "Odd stuff" to see my earlier discussion
of a similar or related problem.)

It's got nothing to do with other content, if you mean other content in the scene.  Even if I load just the P4 clothes, they have holes in preview. 

I tried copying the P4 clothes - obj, textures, etc. from a new install, thinking maybe the content update was the problem, but it persists.

It's not too big a deal since I don't use P4 clothes except in this test of the WW demo, but it is making it impossible to see if WW is worth it for my use.

I got the clothes to render ok normals forward or not. Didn't matter about backfacing poly's either.

But I could see the holes with SreeD preview mode but not  OpenGL mode. I'd say it's a problem with the SreeD renderer .

Quote -
But I could see the holes with SreeD preview mode but not  OpenGL mode. I'd say it's a problem with the SreeD renderer .

No. What ockham said is correct: Poser is working fine. Some objects are badly done.

Poser 4 render engine ignores normales completly and creates his own. This is good behaviour in this case, but bad for  most other meshes. So e-frontier changed this. Poser 7 reads normals correct so this errors becomes visible.

If you have trouble with an object, do what ockham said allready: Use UV-mapper.

But the problem ONLY happens in the SreeD preview for me It does not happen in any other mode (Firely, P4render or openGL preview) The problem is with the SreeD renderer in combination with certain models. I've seen a similar problem with some DAZ figures (V2, Mill kids, Mike2)