error in prep_normalized_plots()

[isaacovercast]

Every so often you'll see this message, i'll wager it only happens on small values of k.

Generating abunance distributions through time                                                                                                       
Traceback (most recent call last):                                                                                                                   
  File "./gimmeSAD.py", line 850, in <module>                                                                                                        
    plot_rank_abundance_through_time(args.outdir, sp_through_time, equilibria, verbose=args.verbose)                                                 
  File "./gimmeSAD.py", line 193, in plot_rank_abundance_through_time                                                                                
    max_n_species, max_abundance, max_octave, max_class_count, max_n_bins, octave_bin_labels = prep_normalized_plots(sp_through_time)                
  File "./gimmeSAD.py", line 272, in prep_normalized_plots                                                                                           
    max_abundance = max([max([y.abundance for y in sp]) for sp in sp_through_time.values()])