If you didn't save the layout as a new preferred state, it should be OK after a restart of Poser.

If not, then try the "Launch to Factory state" thing in the preferences.

but a restart should clear it up.

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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.