Reading UVIS HDAC file throws exception

[rfrenchseti]

Attempting to read an UVIS HDAC file results in the following error:

Traceback (most recent call last):
  File "/home/rfrench/src/pdw/pds.py", line 25, in <module>
    bp = oops.Backplane.Backplane(obs)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/seti/oops/pds-oops/oops/backplane/__init__.py", line 143, in __init__
    self.obs_event = obs.event_at_grid(self.meshgrid, time=self.time)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/seti/oops/pds-oops/oops/observation/pixel.py", line 256, in event_at_grid
    event.neg_arr_ap = meshgrid.los
    ^^^^^^^^^^^^^^^^
  File "/seti/oops/pds-oops/oops/event.py", line 565, in neg_arr_ap
    value = Vector3.as_vector3(value).as_readonly()
            ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/seti/oops/pds-oops/polymath/vector3.py", line 54, in as_vector3
    return Vector3(arg)
           ^^^^^^^^^^^^
  File "/seti/oops/pds-oops/polymath/vector.py", line 37, in __init__
    super(Vector,self).__init__(arg, mask=mask, derivs=derivs, units=units,
  File "/seti/oops/pds-oops/polymath/qube.py", line 351, in __init__
    (values, arg_mask) = Qube._as_values_and_mask(arg, opstr=opstr)
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/seti/oops/pds-oops/polymath/qube.py", line 494, in _as_values_and_mask
    raise TypeError('invalid%s data type: %s'
TypeError: invalid Vector3 data type: method

Program:

import hosts.cassini.uvis as uvis
obs = uvis.from_file('HDAC2009_005_01_25.LBL')