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[Error 7] Toolkit Error: USB Failure. Code: Error opening device

I have followed all the instruction in setting up the intel compute stick 2. However, when I run the make examples, I keep getting this error.

make examples starting.
(cd examples; make)
make[1]: Entering directory '/home/francis/ncsdk/examples'
make -C apps/.
make[2]: Entering directory '/home/francis/ncsdk/examples/apps'
make -C hello_ncs_py/.
make[3]: Entering directory '/home/francis/ncsdk/examples/apps/hello_ncs_py'
nothing to make or download for this example, use 'make run' to run the examples.
make[3]: Leaving directory '/home/francis/ncsdk/examples/apps/hello_ncs_py'
make -C multistick_cpp/.
make[3]: Entering directory '/home/francis/ncsdk/examples/apps/multistick_cpp'

making googlenet
(cd ../../caffe/GoogLeNet; make compile; cd ../../apps/multistick_cpp; cp ../../caffe/GoogLeNet/graph ./googlenet.graph;)
make[4]: Entering directory '/home/francis/ncsdk/examples/caffe/GoogLeNet'

making prereqs
(cd ../../data/ilsvrc12; make)
make[5]: Entering directory '/home/francis/ncsdk/examples/data/ilsvrc12'
make[5]: Leaving directory '/home/francis/ncsdk/examples/data/ilsvrc12'

making prototxt
Prototxt file already exists

making caffemodel
caffemodel file already exists

making compile
mvNCCompile -w bvlc_googlenet.caffemodel -s 12 deploy.prototxt
/usr/local/bin/ncsdk/Controllers/Parsers/TensorFlowParser/Convolution.py:46: SyntaxWarning: assertion is always true, perhaps remove parentheses?
assert(False, "Layer type not supported by Convolution: " + obj.type)
/usr/local/bin/ncsdk/Controllers/Parsers/Phases.py:322: SyntaxWarning: assertion is always true, perhaps remove parentheses?
assert(len(pred) == 1, "Slice not supported to have >1 predecessors")
mvNCCompile v02.00, Copyright @ Intel Corporation 2017

Fusing Pad and Convolution2D
Fusing BatchNorm and Scale after Convolution
Replacing BN with Bias&Scale
Fusing Permute and Flatten
Fusing Eltwise and Relu
Eliminate layers that have been parsed as NoOp

Evaluating input and weigths for each hw layer

----------------------

Network Input tensors ['data#143']

Network Output tensors ['prob#227']

Blob generated
make[4]: Leaving directory '/home/francis/ncsdk/examples/caffe/GoogLeNet'

making squeezenet
(cd ../../caffe/SqueezeNet; make compile; cd ../../apps/multistick_cpp; cp ../../caffe/SqueezeNet/graph ./squeezenet.graph;)
make[4]: Entering directory '/home/francis/ncsdk/examples/caffe/SqueezeNet'

making prereqs
(cd ../../data/ilsvrc12; make)
make[5]: Entering directory '/home/francis/ncsdk/examples/data/ilsvrc12'
make[5]: Leaving directory '/home/francis/ncsdk/examples/data/ilsvrc12'
LICENSE file already exists

making prototxt
Prototxt file already exists

making caffemodel
caffemodel file already exists

making compile
mvNCCompile -w squeezenet_v1.0.caffemodel -s 12 deploy.prototxt
/usr/local/bin/ncsdk/Controllers/Parsers/TensorFlowParser/Convolution.py:46: SyntaxWarning: assertion is always true, perhaps remove parentheses?
assert(False, "Layer type not supported by Convolution: " + obj.type)
/usr/local/bin/ncsdk/Controllers/Parsers/Phases.py:322: SyntaxWarning: assertion is always true, perhaps remove parentheses?
assert(len(pred) == 1, "Slice not supported to have >1 predecessors")
mvNCCompile v02.00, Copyright @ Intel Corporation 2017

Fusing Pad and Convolution2D
Fusing BatchNorm and Scale after Convolution
Replacing BN with Bias&Scale
Fusing Permute and Flatten
Fusing Eltwise and Relu
Eliminate layers that have been parsed as NoOp

Evaluating input and weigths for each hw layer

----------------------

Network Input tensors ['data#67']

Network Output tensors ['prob#106']

Blob generated
make[4]: Leaving directory '/home/francis/ncsdk/examples/caffe/SqueezeNet'

making multistick_cpp
cp googlenet.graph cpp/googlenet.graph;
cp squeezenet.graph cpp/squeezenet.graph;
g++ cpp/multistick.cpp -o cpp/multistick_cpp -lmvnc
Created cpp/multistick_cpp executable
make[3]: Leaving directory '/home/francis/ncsdk/examples/apps/multistick_cpp'
make -C hello_ncs_cpp/.
make[3]: Entering directory '/home/francis/ncsdk/examples/apps/hello_ncs_cpp'

making hello_ncs_cpp
g++ cpp/hello_ncs.cpp -o cpp/hello_ncs_cpp -lmvnc
Created cpp/hello_ncs_cpp executable
make[3]: Leaving directory '/home/francis/ncsdk/examples/apps/hello_ncs_cpp'
make[2]: Leaving directory '/home/francis/ncsdk/examples/apps'
make -C caffe/.
make[2]: Entering directory '/home/francis/ncsdk/examples/caffe'
make -C AlexNet
make[3]: Entering directory '/home/francis/ncsdk/examples/caffe/AlexNet'

making prereqs
(cd ../../data/ilsvrc12; make)
make[4]: Entering directory '/home/francis/ncsdk/examples/data/ilsvrc12'
make[4]: Leaving directory '/home/francis/ncsdk/examples/data/ilsvrc12'
chmod +x run.py

making prototxt
Prototxt file already exists

making profile
mvNCProfile deploy.prototxt -s 12
/usr/local/bin/ncsdk/Controllers/Parsers/TensorFlowParser/Convolution.py:46: SyntaxWarning: assertion is always true, perhaps remove parentheses?
assert(False, "Layer type not supported by Convolution: " + obj.type)
/usr/local/bin/ncsdk/Controllers/Parsers/Phases.py:322: SyntaxWarning: assertion is always true, perhaps remove parentheses?
assert(len(pred) == 1, "Slice not supported to have >1 predecessors")
mvNCProfile v02.00, Copyright @ Intel Corporation 2017

****** WARNING: No Weights found. using filler weights ******
Fusing Pad and Convolution2D
Fusing BatchNorm and Scale after Convolution
Replacing BN with Bias&Scale
Fusing Permute and Flatten
Fusing Eltwise and Relu
Eliminate layers that have been parsed as NoOp

Evaluating input and weigths for each hw layer

----------------------

Network Input tensors ['data#24']

Network Output tensors ['prob#38']

Blob generated
W: [ 0] ncDeviceOpen:528 ncDeviceOpen() XLinkBootRemote returned error 3

[Error 7] Toolkit Error: USB Failure. Code: Error opening device
Makefile:64: recipe for target 'profile' failed
make[3]: *** [profile] Error 255
make[3]: Leaving directory '/home/francis/ncsdk/examples/caffe/AlexNet'
Makefile:12: recipe for target 'AlexNet' failed
make[2]: *** [AlexNet] Error 2
make[2]: Leaving directory '/home/francis/ncsdk/examples/caffe'
Makefile:12: recipe for target 'caffe/.' failed
make[1]: *** [caffe/.] Error 2
make[1]: Leaving directory '/home/francis/ncsdk/examples'
Makefile:57: recipe for target 'examples' failed
make: *** [examples] Error 2

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