I am trying to run a 2d laminar pipe flow simulation. I get the following error when I run simple.py:

sfepy: left over: ['verbose', '__builtins__', '__file__', 'absolute_import', '__name__', '__package__', '_filename', '__doc__']
Traceback (most recent call last):
  File "/scratch/sfepy/simple.py", line 170, in <module>
  File "/scratch/sfepy/simple.py", line 155, in main
  File "/scratch/sfepy/sfepy/base/conf.py", line 383, in from_file_and_options
    override=override, setup=setup)
  File "/scratch/sfepy/sfepy/base/conf.py", line 369, in from_file
    override=override, setup=setup)
  File "/scratch/sfepy/sfepy/base/conf.py", line 415, in __init__
    required=required, other=other)
  File "/scratch/sfepy/sfepy/base/conf.py", line 433, in setup
  File "/scratch/sfepy/sfepy/base/conf.py", line 506, in transform_input
    self.__dict__[key] = transform(self.__dict__[key])
  File "/scratch/sfepy/sfepy/base/conf.py", line 187, in transform_fields
    if c2.dtype in dtypes:
TypeError: unhashable type: 'dict'

the problem setup file and mesh are attached. Could you tell me where I am going wrong?

Best regards,