Dark Energy Spectroscopic Survey [DESpec] » Simulation Pipeline

This is a really weird bug and I couldn't figure it out. It occurs when a new figure is created in plot_line (l. 1060). WTF?

=========================
entering Throughput
=========================
... imported data
... Combined minor optical elements
... Combined major optical elements with galaxy, including aperture losses
... computed final throughput
... exported data to databank
... basic diagnostic plots
fig_number: 1
fig_number: 1
fig_number: 1
bad plot; throughput spectrum
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/IPython/utils/py3compat.pyc in execfile(fname, *where)
    176             else:
    177                 filename = fname
--> 178             __builtin__.execfile(filename, *where)

/Users/ben/Documents/DESpec/repo/despec/04-Throughput/CalculateThroughput_Nord/CalculateThroughput.py in <module>()
    154 #-------------------------------
    155 if __name__ == '__main__':
--> 156         main()
    157 
    158 

/Users/ben/Documents/DESpec/repo/despec/04-Throughput/CalculateThroughput_Nord/CalculateThroughput.py in main()
    147 def main():
    148 
--> 149         throughput()
    150         print
    151         print

/Users/ben/Documents/DESpec/repo/despec/04-Throughput/CalculateThroughput_Nord/CalculateThroughput.py in throughput()
    131                                                                 fig_number=1, plot_number=0, title='', base_directory='.', filename_addendum="",
    132                                                                 show_plot=show_plot,
--> 133                                                                 file_type=plot_image_file_type
    134                         )
    135         except (RuntimeError, TypeError, NameError):

/Users/ben/Documents/DESpec/repo/despec/Plotters_New/Plotters_New.pyc in plot_line(center, hist, width, center1, hist1, width1, center2, hist2, width2, center3, hist3, width3, xmin, xmax, ymin, ymax, yrelmin, yrelmax, rotation, plot_type, color_bar, color_list, textx_loc, texty_loc, mytext, linewidth, scaling_x, scaling_y, title, xlabel, ylabel, label_legend, label_legend1, label_legend2, labels_xtick, fig_height, fig_name, base_directory, filename_addendum, file_type, choose_remove_file, fig_number, plot_number, show_plot)
   1058 
   1059         print "fig_number:", fig_number
-> 1060         fig = pylab.figure(fig_number)
   1061         file_figure_out = base_directory+"/Figures/"+fig_name+"_"+str(plot_number)+"."+file_type
   1062 

/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/pyplot.pyc in figure(num, figsize, dpi, facecolor, edgecolor, frameon, FigureClass, **kwargs)
    341                                              frameon=frameon,
    342                                              FigureClass=FigureClass,
--> 343                                              **kwargs)
    344 
    345         if figLabel:

/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/backends/backend_macosx.pyc in new_figure_manager(num, *args, **kwargs)
    241                       "Python as a framework on Mac OS X")
    242     FigureClass = kwargs.pop('FigureClass', Figure)
--> 243     figure = FigureClass(*args, **kwargs)
    244     return new_figure_manager_given_figure(num, figure)
    245 

/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/figure.pyc in __init__(self, figsize, dpi, facecolor, edgecolor, linewidth, frameon, subplotpars, tight_layout)
    302         self.dpi_scale_trans = Affine2D()
    303         self.dpi = dpi
--> 304         self.bbox_inches = Bbox.from_bounds(0, 0, *figsize)
    305         self.bbox = TransformedBbox(self.bbox_inches, self.dpi_scale_trans)
    306 

/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/transforms.pyc in from_bounds(x0, y0, width, height)
    784         *width* and *height* may be negative.
    785         """ 
--> 786         return Bbox.from_extents(x0, y0, x0 + width, y0 + height)
    787 
    788     @staticmethod

TypeError: unsupported operand type(s) for +: 'int' and 'NoneType'