Keras: NameError: the name CVM is not defined

[Panache1]

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I'm getting a NameError: the name CVM is not defined on a program that ran last week. The only thing I think I've done since then was to install quandl through Anaconda Navigator. I removed quandl, but I'm still getting the error.

I understand this is more likely something I screwed up, rather than a "bug", but I'd appreciate any help you can give me to get things back up and running.

Here is the full exception report:

runfile('E:/Python Files/Accuracy Error Demo.py', wdir='E:/Python Files')
Traceback (most recent call last):

File "", line 1, in
runfile('E:/Python Files/Accuracy Error Demo.py', wdir='E:/Python Files')

File "C:\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py", line 866, in runfile
execfile(filename, namespace)

File "C:\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py", line 102, in execfile
exec(compile(f.read(), filename, 'exec'), namespace)

File "E:/Python Files/Accuracy Error Demo.py", line 45, in
model.fit(X_train, y_train, batch_size=batch_size, nb_epoch=100)

File "C:\Anaconda3\lib\site-packages\keras\models.py", line 672, in fit
initial_epoch=initial_epoch)

File "C:\Anaconda3\lib\site-packages\keras\engine\training.py", line 1168, in fit
self._make_train_function()

File "C:\Anaconda3\lib\site-packages\keras\engine\training.py", line 767, in _make_train_function
**self._function_kwargs)

File "C:\Anaconda3\lib\site-packages\keras\backend\theano_backend.py", line 969, in function
return Function(inputs, outputs, updates=updates, **kwargs)

File "C:\Anaconda3\lib\site-packages\keras\backend\theano_backend.py", line 955, in __init__
**kwargs)

File "C:\Anaconda3\lib\site-packages\theano\compile\function.py", line 326, in function
output_keys=output_keys)

File "C:\Anaconda3\lib\site-packages\theano\compile\pfunc.py", line 486, in pfunc
output_keys=output_keys)

File "C:\Anaconda3\lib\site-packages\theano\compile\function_module.py", line 1795, in orig_function
defaults)

File "C:\Anaconda3\lib\site-packages\theano\compile\function_module.py", line 1661, in create
input_storage=input_storage_lists, storage_map=storage_map)

File "C:\Anaconda3\lib\site-packages\theano\gof\link.py", line 699, in make_thunk
storage_map=storage_map)[:3]

File "C:\Anaconda3\lib\site-packages\theano\gof\vm.py", line 1063, in make_all
impl=impl))

File "C:\Anaconda3\lib\site-packages\theano\scan_module\scan_op.py", line 892, in make_thunk
on_unused_input='ignore')

File "C:\Anaconda3\lib\site-packages\theano\compile\function.py", line 326, in function
output_keys=output_keys)

File "C:\Anaconda3\lib\site-packages\theano\compile\pfunc.py", line 486, in pfunc
output_keys=output_keys)

File "C:\Anaconda3\lib\site-packages\theano\compile\function_module.py", line 1795, in orig_function
defaults)

File "C:\Anaconda3\lib\site-packages\theano\compile\function_module.py", line 1661, in create
input_storage=input_storage_lists, storage_map=storage_map)

File "C:\Anaconda3\lib\site-packages\theano\gof\link.py", line 699, in make_thunk
storage_map=storage_map)[:3]

File "C:\Anaconda3\lib\site-packages\theano\gof\vm.py", line 1114, in make_all
self.updated_vars,

File "C:\Anaconda3\lib\site-packages\theano\gof\vm.py", line 968, in make_vm
vm = CVM(

NameError: ('The following error happened while compiling the node', forall_inplace,cpu,scan_fn}(TensorConstant{2}, InplaceDimShuffle{1,0,2}.0, IncSubtensor{InplaceSet;:int64:}.0, DeepCopyOp.0, TensorConstant{1}, lstm_6_U_o, lstm_6_U_f, lstm_6_U_i, lstm_6_U_c), '\n', "name 'CVM' is not defined")

And here is a sample program which generates the error (from my first bug report):

import numpy as np
from numpy.random import choice
from keras.layers import Dense
from keras.layers import LSTM
from keras.models import Sequential

batch_size = 2 
N_train = 100
N_test = 10

# CREATE SOME RANDOM DATA
X_train = np.ones((N_train, 2))
X_test = np.ones((N_test, 2))
y_train = np.ones((N_train, 1))
y_test = np.ones((N_test, 1))
one_indexes = choice(a=N_train, size=int(N_train / 2), replace=False)
X_train[one_indexes, 0] = -1
y_train[one_indexes] = -1
one_indexes = choice(a=N_test, size=int(N_test / 2), replace=False)
X_test[one_indexes, 0] = -1
y_test[one_indexes] = -1

# NORM THE DATA IN THE RANGE OF  -0.25 to 0.25      
### THIS IS WHAT CAUSES THE PROBLEM ###      
X_train *= 0.25
y_train *= 0.25
X_test *= 0.25
y_test *= 0.25      

X_train = np.expand_dims(X_train, axis=2)
X_test = np.expand_dims(X_test, axis=2)

# CREATE THE MODEL
model = Sequential()
model.add(LSTM(8, input_shape=(2, 1), return_sequences=False))
model.add(Dense(1, activation='tanh'))

model.compile(loss='mean_absolute_error', optimizer='adam', metrics=['accuracy'])

model.fit(X_train, y_train, batch_size=batch_size, nb_epoch=100)

# EVALUATE THE MODEL ON THE TEST DATA
score, acc = model.evaluate(X_test, y_test, batch_size=batch_size, verbose=0)
print()
print('Evaluate accuracy:', acc)
print()

# PREDICT THE MODEL ON THE TEST DATA
yFit = model.predict(X_test, batch_size=batch_size)

error = 0    
print('Prediction/Actual')
for c in range(X_test.shape[0]):
    error += yFit[c, 0] - y_test[c, 0]
    print(str(yFit[c]) + '  ' + str(y_test[c]))

error = abs(error)
print()
print('Predict error: ', error)
print('Predict accuracy: ', (1 - error))

[Panache1]

The last comment on this thread solved the problem, ie. delete the C:\Users\username\AppData\Local\Theano directory