error using Maya plugin meya2egg

Hi, I loaded MayaPandaTool.mel from panda1.8.1 to Maya script editor I use Maya 2012 32 bit, when I ran the script I got this error
Error: Controls must have a layout. No layout found in window :
when I use CMD in windows it works but the plugin does not work. I have additional problem in using maya 2013 64 bit maya2egg2013 does not work even in CMD. how can I fix these problems?
thanks to help :slight_smile: