Hasta La Motion!

Hi,
I just can’t seem to figure out how to successfully install any custom Nuke gizmos that I’ve downloaded.

So far, I’ve created a ‘menu’py’ file in my ‘.nuke’ folder, and entered this line of script:
toolbar = nuke.menu(‘Nodes’)
toolbar.addCommand(‘Keyer/KillSpillPlus’, ‘nuke.createNode("KillSpillPlus")’,’ctrl+k’)

The gizmo appears under the ‘keyer’ menu, but when I click it, I’m greeted with the following error message:

KillSpillPlus: unknown command
Traceback (most recent call last):
File "<string>", line 1, in <module>
RuntimeError: KillSpillPlus: Unknown command

Any ideas? I must doing something really basic wrong I’m guessing, I just can’t for the life of me figure out what that is!

Thanks in advance.