Error "'module' object has no attribute 'byte'" on mnist example

[user400479]

I just tried the mnist example (using the command ./convert.py examples/mnist/lenet.prototxt --code-output-path=mynet.py) and I'm getting the error below:

Traceback (most recent call last):
File "./convert.py", line 5, in
import numpy as np
File "/usr/lib/python2.7/dist-packages/numpy/init.py", line 153, in
from . import add_newdocs
File "/usr/lib/python2.7/dist-packages/numpy/add_newdocs.py", line 13, in
from numpy.lib import add_newdoc
File "/usr/lib/python2.7/dist-packages/numpy/lib/init.py", line 22, in
from .npyio import *
File "/usr/lib/python2.7/dist-packages/numpy/lib/npyio.py", line 4, in
from . import format
File "/usr/lib/python2.7/dist-packages/numpy/lib/format.py", line 141, in
import io
File "/home/legup/caffe/python/caffe/io.py", line 2, in
import skimage.io
File "/usr/local/lib/python2.7/dist-packages/skimage/init.py", line 167, in
from .util.dtype import (img_as_float32,
File "/usr/local/lib/python2.7/dist-packages/skimage/util/init.py", line 1, in
from .dtype import (img_as_float32, img_as_float64, img_as_float,
File "/usr/local/lib/python2.7/dist-packages/skimage/util/dtype.py", line 19, in
_integer_types = (np.byte, np.ubyte, # 8 bits
AttributeError: 'module' object has no attribute 'byte'

The installed version of numpy on my system is 1:1.8.2-0ubuntu0.1 (i.e. the python-numpy package in Ubuntu 14.04)

How can I fix this?