[yt-dev] Issue #1087: python seg faults when trying to load face-centered Enzo MHDCT fields (yt_analysis/yt)

New issue 1087: python seg faults when trying to load face-centered Enzo MHDCT fields https://bitbucket.org/yt_analysis/yt/issues/1087/python-seg-faults-when-tryi... Nathan Goldbaum: Dataset is here: http://use.yt/upload/58d7f69e Test script: ``` #!python import yt ds = yt.load('DD0004/DD0004') ad = ds.all_data() ad['BxF'] ``` The traceback the Apple crash reporter generates doesn't have anything particularly illuminating in it. The error message that gets printed to my console is: ``` #! Python(56127,0x7fff742f5300) malloc: *** error for object 0x7ffb01f54608: incorrect checksum for freed object - object was probably modified after being freed. *** set a breakpoint in malloc_error_break to debug ```