ImportError: [...] Library not loaded [...] Reason: Incompatible library version - python-imaging-library

Question

I just downloaded scikit-image and I got an error message by simply trying to import the packages to run a tutorial example of the scikit website ("Gabor filter banks for texture classification"). See error message below.
I re-installed libtiff (using pip and homebrew) and Pillow (using conda), following the advice of some scikit-image developers. But the problem persists. I have the latest version of pillow installed (4.2.1), and I made sure to uninstall PIL before, and to build pillow from source to install all the dependencies.
ImportError Traceback (most recent call last)
<ipython-input-1-6205bd0cfb9d> in <module>()
5 from scipy import ndimage as ndi
6
----> 7 from skimage import data
8 from skimage.util import img_as_float
9 from skimage.filters import gabor_kernel
/Applications/anaconda/lib/python2.7/site-packages/skimage/data/__init__.py in <module>()
14
15 from .. import data_dir
---> 16 from ..io import imread, use_plugin
17 from .._shared._warnings import expected_warnings
18 from ._binary_blobs import binary_blobs
/Applications/anaconda/lib/python2.7/site-packages/skimage/io/__init__.py in <module>()
5 """
6
----> 7 from .manage_plugins import *
8 from .sift import *
9 from .collection import *
/Applications/anaconda/lib/python2.7/site-packages/skimage/io/manage_plugins.py in <module>()
26 from glob import glob
27
---> 28 from .collection import imread_collection_wrapper
29
30
/Applications/anaconda/lib/python2.7/site-packages/skimage/io/collection.py in <module>()
10 import numpy as np
11 import six
---> 12 from PIL import Image
13
14 from ..external.tifffile import TiffFile
/Applications/anaconda/lib/python2.7/site-packages/PIL/Image.py in <module>()
54 # Also note that Image.core is not a publicly documented interface,
55 # and should be considered private and subject to change.
---> 56 from . import _imaging as core
57 if PILLOW_VERSION != getattr(core, 'PILLOW_VERSION', None):
58 raise ImportError("The _imaging extension was built for another "
ImportError: dlopen(/Applications/anaconda/lib/python2.7/site-
packages/PIL/_imaging.so, 2): Library not loaded: #rpath/libtiff.5.dylib
Referenced from: /Applications/anaconda/lib/python2.7/site-
packages/PIL/_imaging.so
Reason: Incompatible library version: _imaging.so requires version 8.0.0 or
later, but libtiff.5.dylib provides version 7.0.0