title: `Warning: Cannot parent components or objects in the underworld.` : adding bend deformer to group
body: <p>following lines lead to <code>Warning: Cannot parent components or objects in the underworld.</code></p>
  
  <p>self.lashesGroup = cmds.group(em=True, name="lashesGroup")
  cmds.parent(self.benddeformer, self.lashesGroup)</p>
  
  <p>benddeformer is a non-linear bend deformer - how can i avoid this warning? because it doesnt bother at first, but seems to cause problems later on</p>