error running Mogi example synthetic code

[EJFielding]

I get an error when I try to run the synthetic example code for the Mogi model.
mogi/examples/synthetic] fielding% python3 mogi.py
Traceback (most recent call last):
File "mogi.py", line 18, in
import altar.models.mogi
File "/Users/fielding/Documents/progs/Caltech/AlTar-2.0/models/mogi/mogi/init.py", line 15, in
from .ext import libmogi
File "/Users/fielding/Documents/progs/Caltech/AlTar-2.0/models/mogi/mogi/ext/init.py", line 13, in
from . import mogi as libmogi
ImportError: cannot import name 'mogi'`

[EJFielding]

The synthetic generation program now works for me with no errors.