Hot Gym Anomaly Plot Error

fursty@ubuntu:~/nupic/examples/opf/clients/hotgym/anomaly/one_gym$ ./run.py --plot
Starts a NuPIC model from the model params returned by the swarm
and pushes each line of input from the gym into the model. Results
are written to an output file (default) or plotted dynamically if
the --plot option is specified.

Creating model from rec-center-hourly...
Importing model params from model_params.rec_center_hourly_model_params
Traceback (most recent call last):
  File "./run.py", line 152, in <module>
    runModel(GYM_NAME, plot=plot)
  File "./run.py", line 142, in runModel
    runIoThroughNupic(inputData, model, gymName, plot)
  File "./run.py", line 102, in runIoThroughNupic
    output = nupic_anomaly_output.NuPICPlotOutput(gymName)
  File "/home/fursty/nupic/examples/opf/clients/hotgym/anomaly/one_gym/nupic_anomaly_output.py", line 167, in __init__
    plt.ion()
NameError: global name 'plt' is not defined
fursty@ubuntu:~/nupic/examples/opf/clients/hotgym/anomaly/one_gym$ ./run.py 
Starts a NuPIC model from the model params returned by the swarm
and pushes each line of input from the gym into the model. Results
are written to an output file (default) or plotted dynamically if
the --plot option is specified.

Creating model from rec-center-hourly...
Importing model params from model_params.rec_center_hourly_model_params
Preparing to output rec-center-hourly data to rec-center-hourly_out.csv
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