Traceback (most recent call last):
  File "img_model.py", line 226, in <module>
    optplot(image, tr, pub_name, comp, step, param)
  File "img_model.py", line 56, in optplot
    bpl.compare(image.getImage(), tr.getModelImage(image),
AttributeError: 'module' object has no attribute 'compare'
Traceback (most recent call last):
  File "img_model.py", line 295, in <module>
    optloop(tr)
  File "img_model.py", line 50, in optloop
    dlnp, X, alpha = tr.optimize()
  File "/home/kilian/tractor/tractor/engine.py", line 793, in optimize
    X = self.getUpdateDirection(allderivs, damp=damp, priors=priors)
  File "/home/kilian/tractor/tractor/engine.py", line 1100, in getUpdateDirection
    A = csr_matrix((spvals, (sprows, spcols)), shape=(Nrows, Ncols))
  File "/usr/lib/python2.7/dist-packages/scipy/sparse/compressed.py", line 44, in __init__
    other = self.__class__( coo_matrix(arg1, shape=shape) )
  File "/usr/lib/python2.7/dist-packages/scipy/sparse/compressed.py", line 28, in __init__
    arg1 = arg1.asformat(self.format)
  File "/usr/lib/python2.7/dist-packages/scipy/sparse/base.py", line 196, in asformat
    return getattr(self,'to' + format)()
  File "/usr/lib/python2.7/dist-packages/scipy/sparse/coo.py", line 293, in tocsr
    indptr, indices, data)
  File "/usr/lib/python2.7/dist-packages/scipy/sparse/sparsetools/coo.py", line 106, in coo_tocsr
    return _coo.coo_tocsr(*args)
KeyboardInterrupt