launching failure

[jmp]

dear cmtk community,

i've installed without problems the various programs to run connectomemapper
and i was even able to perform the first steps of the soft

however, i've upgraded meanwhile (2 days ago) neurodebian and since this procedure i am not more able to run connectomics.
moreover, i couldn't find on the net (also cmtk-users) solutions for my problem all the more so as i am not a linux and python user

thanks a lot for your help
jm

error message:

Traceback (most recent call last):
  File "/usr/local/bin/connectomemapper", line 6, in <module>
    from cmp.gui import CMPGUI
  File "/usr/local/lib/python2.6/dist-packages/cmp/__init__.py", line 13, in <module>
    import stages.converter.dicomconverter as dicomconverter
  File "/usr/local/lib/python2.6/dist-packages/cmp/stages/converter/dicomconverter.py", line 17, in <module>
    import nibabel as ni
  File "/usr/lib/pymodules/python2.6/nibabel/__init__.py", line 38, in <module>
    from . import analyze as ana
  File "/usr/lib/pymodules/python2.6/nibabel/analyze.py", line 87, in <module>
    from .volumeutils import (native_code, swapped_code, make_dt_codes, allopen,
  File "/usr/lib/pymodules/python2.6/nibabel/volumeutils.py", line 19, in <module>
    from .casting import (shared_range, type_info, as_int, best_float, OK_FLOATS,
ImportError: No module named casting