mayavi2 -t test failure on Mac OS 10.11

[youdin]

I recently installed mayavi 4.4.3 with Canopy Package manager on a Mac with OS 10.11.1. The command line test mayavi2 -t gives an error message:

---

Running TVTK tests.
Traceback (most recent call last):
File "/Users/me/Library/Enthought/Canopy_64bit/User/bin/mayavi2", line 8, in
from mayavi.scripts.mayavi2 import main
File "/Users/me/Library/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/mayavi/scripts/mayavi2.py", line 426, in
runtests.main()
File "/Users/me/Library/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/mayavi/tests/runtests.py", line 217, in main
status = m2_tests(verbose)
File "/Users/me/Library/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/mayavi/tests/runtests.py", line 170, in m2_tests
tests = find_tests(['tvtk'])
File "/Users/me/Library/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/mayavi/tests/runtests.py", line 64, in find_tests
s = getattr(mod, symbol)
AttributeError: 'module' object has no attribute 'tvtk'`

Some old google hits matched this problem, but not with any helpful diagnosis. Is there something else I need to install?