Problem solved, Thank you.
Turning OFF OpenGl preview in the Poser render options is not working, so I reinstall poser after uninstall.
After couple of hours working than everything works fine. Maybe my poser had problems.
In these days after find out Octane Render I'm very happy. Thanks again.

Thank you for answer. but It's weird that problem happens only to me.
1) If it just that figure or all figures? It may have a rigging issue - does the problem happen with other figures?
: all figure i use, v4, m4, ryan etc.
2) Can you see the seam in the Poser viewport?
: during rendering poser ...

- Operating System : Win 8
- 64 bit
- Amount of RAM : 8 GB
- Graphics Card(s) ; GTX 570, 1.2GB)
- Nvidia driver version : 320.49
- Poser version 2014 10.0.1.25099
- OctaneRender for Plugin version : 1.20 a4

and skinning method is poser traditional.

oh i'm sorry. i did not know. iwill write again with full information tommorow. thank you. anyway i have a question. what is pls? sorry english is not my first language so i am not good at english.

I'm using victoria4, morph, morph++, skin textures are mayuka's. does texture matters?

when i try to render animation, there appear lines between body parts (chest, shoulder, forearm etc.) if no morph injection applied, there is no crease, but once morph injected there appear cracks. how can i fix this? please heip me !