[PyMOL] center of mass

[kanika s. <ksh...@gm...>]

I opened a file 1alu in pymol and ran script CenterOfMass.py. When I gave
the command com 1alu, state=1, it displays a message


....AttributeError: 'module' object has no attribute 'get_legal_name'...

Iam unable to figure out why is this so.,