I think the correct syntax is "from scipy import fftpack",
I made some changes to support the new scipy in the numerix layer.
You may want to update from CVS and try again. There still appears to
be a problem with the color mapping code, but this is the only one I
am aware of after light testing.
Checking in lib/matplotlib/numerix/mlab/__init__.py;
new revision: 1.3; previous revision: 1.2