Устал задавать этот вопрос, но тем не менее: "А что, инструкцию по инсталляции "западло" прочитать было?"
Installation:
•Close Maya.
•If applicable, delete the files from an earlier spPaint3d version (both .py and .pyc files of this script may need to be removed).
•Unzip the script in the appropriate user Maya folder.
•Make sure the script files go to the script folder, the icons should go to the prefs/icons folder.
The help folder is not used at runtime and can be anywhere, if there at all.
•Make sure the PYTHONPATH environment variable is set properly in the maya.env file or the script may not run properly. Maya 2008 has been reported to have a faulty default path for python.
•Restart Maya.
•Execute the script by typing "spPaint3d" in the MEL script editor command line.
•For future use, the same command can be put into a shelf as is.