I've seen this frequently in Poser 6. Haven't encountered it - yet - in Poser 7.

Clicking on a top node is a good tip. I'll try that!

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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.