does powerfit have any solution?

[mmmtnez]

Hi everyone,
this is the error I had the last time trying to use powerfit:

/home/marta/scipion/software/lib/python2.7/site-packages/scipy/ndimage/measurements.py:428: FutureWarning: Conversion of the second argument of issubdtype from int to np.signedinteger is deprecated. In future, it will be treated as np.int64 == np.dtype(int).type.
safe = ((np.issubdtype(dt, int) and dt.itemsize <= int_size) or
Writing solutions to file.
Traceback (most recent call last):
File "./scipion/software/bin/powerfit", line 11, in
load_entry_point('powerfit==2.0.0', 'console_scripts', 'powerfit')()
File "/home/marta/scipion/software/lib/python2.7/site-packages/powerfit-2.0.0-py2.7-linux-x86_64.egg/powerfit/powerfit.py", line 214, in main
analyzer.tofile(join(args.directory, 'solutions.out'))
File "/home/marta/scipion/software/lib/python2.7/site-packages/powerfit-2.0.0-py2.7-linux-x86_64.egg/powerfit/analyzer.py", line 103, in tofile
self._generate_solutions()
File "/home/marta/scipion/software/lib/python2.7/site-packages/powerfit-2.0.0-py2.7-linux-x86_64.egg/powerfit/analyzer.py", line 75, in _generate_solutions
zip(pos, self._origin[::-1])]
TypeError: zip argument #1 must support iteration

Any suggestion? Thanks