TypeError in compute_distance_BIC_idx

[pcg108]

When I run the diarizer example, with the following configurations:

[Diarizer]
basename = test
mfcc_feats = test.htk
output_cluster = test.rttm
gmm_output = test.gmm

em_iterations = 3
initial_clusters = 16
M_mfcc = 5

KL_ntop = 3
num_seg_iters_init = 1
num_seg_iters = 1
seg_length = 250

I get the following result:

c++ -pthread -fno-strict-aliasing -g -fwrapv -O2 -Wall -Wdate-time -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions -Wl,-z,relro -Xlinker -export-dynamic -Wl,-O1 -Wl,-Bsymbolic-functions -DNDEBUG -D_FORTIFY_SOURCE=2 -I/usr/include/python2.7 -I/usr/local/cuda/include /tmp/asp_cache_ubuntu/2d078836d05987f85c8b136a5ae5a8c7/module.o /tmp/asp_cache_ubuntu/820bc0d22fdd0d4c58e04cfe09a4963e/gpu.o -L/usr/lib -L/usr/local/cuda/lib -L/usr/local/cuda/lib64 -lcuda -lcublas -lcudart -lboost_python -lpython2.7 -lpthread -ldl -lutil -o /tmp/asp_cache_ubuntu/codepy.temp.2d078836d05987f85c8b136a5ae5a8c7.820bc0d22fdd0d4c58e04cfe09a4963e.module.so
No config file specified, using defaul 'diarizer.cfg' file
Speech file spnsp_file not specified, continuing without it...
...Reading in HTK feature file...
INFO: total number of frames read: 11368
...Reading in speech/nonspeech file...
====================== CLUSTERING ON SUBSET ======================
GMM SPECIALIZER: USING CUDA
c++ -pthread -fno-strict-aliasing -g -fwrapv -O2 -Wall -Wdate-time -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions -Wl,-z,relro -Xlinker -export-dynamic -Wl,-O1 -Wl,-Bsymbolic-functions -DNDEBUG -D_FORTIFY_SOURCE=2 -I/usr/include/python2.7 -I/home/ubuntu/.local/lib/python2.7/site-packages/numpy/core/include -I/usr/local/cuda/include /tmp/asp_cache_ubuntu/b3946a00f5a557aa059251ee30f8cdbc/module.o /tmp/asp_cache_ubuntu/24e36246626cf2c6839211f268b2aa71/gpu.o -L/usr/lib -L/usr/local/cuda/lib -L/usr/local/cuda/lib64 -lcuda -lcublas -lcudart -lboost_python -lpython2.7 -lpthread -ldl -lutil -o /tmp/asp_cache_ubuntu/codepy.temp.b3946a00f5a557aa059251ee30f8cdbc.24e36246626cf2c6839211f268b2aa71.module.so
Traceback (most recent call last):
File "cluster.py", line 700, in
num_seg_iters, seg_length)
File "cluster.py", line 488, in cluster_use_subset
new_gmm, score = compute_distance_BIC_idx(g1, g2, self.X, indices)
File "build/bdist.linux-x86_64/egg/gmm_specializer/gmm.py", line 885, in compute_distance_BIC_idx
TypeError: unsupported operand type(s) for +: 'float' and 'NoneType'

I am unsure as to how to solve this. Is it a result of me generating the HTK file incorrectly? I did it by installing the HTK Toolkit (http://htk.eng.cam.ac.uk/download.shtml) and used the following config file:

TARGETKIND = MFCC_0
TARGETRATE = 100000.0
SAVECOMPRESSED = T
SAVEWITHCRC = T
WINDOWSIZE = 250000.0
USEHAMMING = T
PREEMCOEF = 0.97
NUMCHANS = 26
CEPLIFTER = 22
NUMCEPS = 12
ENORMALISE = F
SOURCEKIND = WAVEFORM
SOURCEFORMAT = NOHEAD
SOURCERATE = 1250

Any help would be greatly appreciated!