yt : [INFO     ] 2014-06-05 16:26:08,557 Making a fixed resolution buffer of (Density) 800 by 800
yt : [INFO     ] 2014-06-05 16:26:08,894 Making a fixed resolution buffer of (Density) 800 by 800
Traceback (most recent call last):
  File "proj_cutout.py", line 42, in <module>
    eps.single_plot(pro,savefig="test")
  File "/mnt/is5000/scratch_uibk/c706/c706130/tools/yt-x86_64/src/yt-hg/yt/visualization/eps_writer.py", line 1265, in single_plot
    d.axis_box_yt(plot, bare_axes=bare_axes, **kwargs)
  File "/mnt/is5000/scratch_uibk/c706/c706130/tools/yt-x86_64/src/yt-hg/yt/visualization/eps_writer.py", line 387, in axis_box_yt
    self.axis_box(xrange=_xrange, yrange=_yrange, xlabel=_xlabel,
UnboundLocalError: local variable '_xrange' referenced before assignment