What are the usual causes for this traceback: Traceback (most recent call last): File "/home/edcjones/cvlib/phase03/IM/slide/test03.py", line 166, in ? test4() File "/home/edcjones/cvlib/phase03/IM/slide/test03.py", line 125, in test4 print arrout File "/usr/local/lib/python2.3/site-packages/numarray/numarraycore.py", line 631, in __str__ return array_str(self) File "/usr/local/lib/python2.3/site-packages/numarray/numarraycore.py", line 1159, in array_str return arrayprint.array2string( File "/usr/local/lib/python2.3/site-packages/numarray/arrayprint.py", line 187, in array2string separator, prefix) File "/usr/local/lib/python2.3/site-packages/numarray/arrayprint.py", line 140, in _array2string data = _gen.ravel(a) File "/usr/local/lib/python2.3/site-packages/numarray/generic.py", line 916, in ravel return reshape(array, (array.nelements(),)) File "/usr/local/lib/python2.3/site-packages/numarray/generic.py", line 907, in reshape v = v.view() libnumarray.error: NA_updateDataPtr: error getting read buffer data ptr