Node cannot be inserted at the specified point in the hierarchy
Posted On Monday, 12th December, 2011 by Daniel. Last updated: December 20th, 2011
If you get the following error when developing with Ext JS 4:
“Node cannot be inserted at the specified point in the hierarchy”
Make sure your Panel IDs are unique.
In my case, I had 2 form panels both with the same ID that I was trying to render.