Plugins loss after upgrating to last spyder release

[Luis Baquero]

Hello.

I had spyder=4.0.0b5 and been working with spyder-notebook nicely.

Then, I installed the last beta release (second release candidate) with:conda update qt pyqt

conda install -c spyder-ide spyder=4.0.0rc1

Now, I have no lorger spyder-Jupyter plug in. I am using the spyder-beta enviroment and when I do

conda list

, I can read the pluging. 

What I tried was:

1, Unistall the pluging with conda unistall spyder-jupyter and then reinstall again with conda install spyder-notebook -c spyder-ide. It did not work.

2, I download the plugin files and unzip the file and copy inside in a folder named spyder_notebook in C:\Users\username\.spyder-py3-dev\plugins.

Then I can see the notebook inside spyder but it crashes:  generating the error placeing here

I did not try pip install becouse it always break my anaconda instalation (I think it is becouse I am using conda for installing)

Any advisee, I really need to wwork with jupyter notebooks inside spyder

Thank you

conda update qt pyqt
conda install -c spyder-ide spyder=4.0.0rc1