Installation error /numpy1.0

Hi

I installed numpy-1.0b1 and scipy-0.5 (from source), and ran the test suites-
both work fine. I also have Numeric and numarray installed.

Im now trying to install matplotlib-0.87.4, but get this error when doing
"python setup.py build" Why would it find the version of numpy to be 0?:

import core -> failed: module compiled against version 90504 of C-API but this
version of numpy is 0
import lib -> failed: No module named oldnumeric
import linalg -> failed: module compiled against version 90504 of C-API but
this version of numpy is 0
import dft -> failed: module compiled against version 90504 of C-API but this
version of numpy is 0
import random -> failed: numpy.dtype does not appear to be the correct type
object
Segmentation fault