It MAY be that the number of pins is too great for Poser to cope with... I've never encountered anything like this. What's weird is that the 5 that are visible in the picture isn't visible in the hierachy editor :o/ Are they also invisible if you render? And are you sure they're not "stacked" on top of each other somewhere?

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.