Bug upon running http://trac.openopt.org/openopt/browser/PythonPackages/OpenOpt/openopt/examples/dfp_2.py

gistfile1.txt

------------------------- OpenOpt 0.505 -------------------------
solver: ralg   problem: unnamed    type: DFP
 iter   objFunVal   log10(maxResidual)   
    0  2.944e+06               0.60 
Traceback (most recent call last):
  File "/home/federico/Systems_Biology/Projects/p53_modeling/Code/dfp_2.py", line 34, in <module>
    r = p.solve('nlp:ralg', plot=1, iprint = 10)
  File "/home/federico/anaconda/lib/python2.7/site-packages/openopt-0.505-py2.7.egg/openopt/kernel/baseProblem.py", line 245, in solve
    return runProbSolver(self, *args, **kwargs)
  File "/home/federico/anaconda/lib/python2.7/site-packages/openopt-0.505-py2.7.egg/openopt/kernel/runProbSolver.py", line 276, in runProbSolver
    solver(p)
  File "/home/federico/anaconda/lib/python2.7/site-packages/openopt-0.505-py2.7.egg/openopt/solvers/UkrOpt/ralg_oo.py", line 155, in __solver__
    g = bestPoint._getDirection(self.approach)
  File "/home/federico/anaconda/lib/python2.7/site-packages/openopt-0.505-py2.7.egg/openopt/kernel/Point.py", line 634, in _getDirection
    self.direction, self.dType = self.df(),'f'
  File "/home/federico/anaconda/lib/python2.7/site-packages/openopt-0.505-py2.7.egg/openopt/kernel/Point.py", line 44, in df
    if not hasattr(self, '_df'): self._df = self.p.df(self.x)
  File "/home/federico/anaconda/lib/python2.7/site-packages/openopt-0.505-py2.7.egg/openopt/kernel/baseProblem.py", line 1004, in <lambda>
    self.wrapped_1st_derivatives(x, ind, funcType, ignorePrev, useSparse))
  File "/home/federico/anaconda/lib/python2.7/site-packages/openopt-0.505-py2.7.egg/openopt/kernel/nonLinFuncs.py", line 403, in wrapped_1st_derivatives
    derivatives = p.wrapped_func(x, ind, funcType, True, True)
  File "/home/federico/anaconda/lib/python2.7/site-packages/openopt-0.505-py2.7.egg/openopt/kernel/nonLinFuncs.py", line 258, in wrapped_func
    d1 = get_d1(func, x, pointVal = None, diffInt = finiteDiffNumbers, stencil=p.JacobianApproximationStencil, exactShape=True)
  File "/home/federico/anaconda/lib/python2.7/site-packages/DerApproximator-0.502-py2.7.egg/DerApproximator/DerApproximator.py", line 113, in get_d1
    raise DerApproximatorException('Currently DerApproximatorx cannot handle functions with (ndim of output) > 1 , only vectors are allowed')
DerApproximator.DerApproximator.DerApproximatorException: Currently DerApproximatorx cannot handle functions with (ndim of output) > 1 , only vectors are allowed