Did some playing around. I haven't tried it on dynamic clothing as yet but in following a suggestion I got elsewhere to make sure I wasn't compressing my output files from Poser I found a setting that says "Use External Morph Targets".  since prop hair and dynamic clothing don't have conforming morphs I figured that it might have something to do with the problem. Turrning it off worked wonders.  The prop hair loads and renders fine now. I would definitely try that with the dynamic clothing since the prop hair and dynamic clothing have similar propertys.