Quote - I have a similar issue that occurs between V4's figure parts, like shoulders/torso etc. It doesn't always happen with all parts, and not with all skins.. But can happen with skins that normally work fine.

If it's a bug of sort, it'd be nice to know what causes it.  The white lines in Becky's screenshot look very similar to some of the stuff I've been struggling with. (And eventually had to solve in PSP manually, later.)

It's not a bug, you just have to reduce the minimum shading rate in the render options.
An object farther away from the camera needs a lower value, where you can raise it if an object is closer.
The reason you either see or don't see those gaps in the textures depends on how the texture was applied to the UV  map, whether it overlapped the edges of were exactly to the edges. 

Poser is actually blameless on this one...
I think it might also have something to do with mipmapping, but that would only involve the OpenGL preview. If you see the gaps in the preview, you know you definitely need to reduce the minimum shading rate. By default it's at 1.0,  and anywhere between. .02-.05 seems to be pretty good, but that will always depend on how far your figures are from the camera.

...