Min,

Thanks for getting back to me. I was able to determine root cause.

My upgrade was throwing an error (I missed it in my earlier attempts to 
upgrade);

Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-
build-Gg_x9G/tornado/

To correct this error I had to upgrade Setup Tools;

$ pip install --upgrade setuptools

# and rerun the notebook upgrade:

$ jupyter notebook --version

Now I'm all set and running v5.0 of notebook. 

Thanks again and I hope this info helps others who may have encountered the 
same thing.

Best, 

Duke


On Wednesday, April 5, 2017 at 9:01:35 AM UTC-4, Min RK wrote:
>
> What do you see from pip list?
>
> You can check the notebook version with jupyter notebook --version. jupyter 
> --version only shows the version of the jupyter-core package, which 
> provides basic dispatch functionality.
>
> -Min
> ​
>
> On Wed, Apr 5, 2017 at 12:17 AM, dukea2006 <duke...@gmail.com 
> <javascript:>> wrote:
>
>> I'm trying to upgrade my environment (Ubuntu 14.04.5 LTS)  from:
>>
>> $ jupyter --version
>> 4.3.0
>>
>> to version 5.0 by running: 
>>
>> pip install --upgrade notebook 
>>
>> The upgrade appears to run correctly with the only error being;
>>
>> Cannot remove entries from nonexistent file /home/vagrant/anaconda3/lib/
>> python3.5/site-packages/easy-install.pth
>>
>> However, the jupyter version doesn't change and the new v5.0 features are 
>> not available. 
>>
>> Any suggestions for next steps?
>>
>>
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