Rise: No "Enter/Exit Live Reveal Slideshow" button

[Vaits]

Hello,
I can select "Slideshow" via "Cell Toolbar" but there is no "Enter/Exit Live Reveal Slideshow" button for me. I installed RISE using conda install -c damianavila82 rise (Python 3.6). To further investigate, I hard refreshed my browser, used different browsers (firefox and chromium) and created a new python 3.5 environment. Nothing changed, there is still no button and I'm not able to start my presentations. Appreciating any help.

conda create -n rise35 python=3.5 anaconda
conda install -n rise35 -c damianavila82 rise
source activate rise35

jupyter nbextension list

Known nbextensions:
  config dir: /home/vaits/anaconda3/envs/rise35/etc/jupyter/nbconfig
    notebook section
      jupyter-js-widgets/extension  enabled 
      - Validating: OK
      rise/main  enabled 
      - Validating: OK

[Vaits]

I just had to create new jupyter notebooks. Now it is working fine in all environments. My old notebooks are still missing RISE. Is this intended? Maybe a small hint in the README would be useful.

[damianavila]

I just had to create new jupyter notebooks. Now it is working fine in all environments

That's weird...

My old notebooks are still missing RISE. Is this intended?

Nop, do you have any error in th js console when you are dealing with these old notebooks?

[Vaits]

Yes and I'm only getting these errors using the old notebooks.

```
Uncaught TypeError: define is not a function
at :8888/nbextensions/nb_conda/main.js?v=20170720142008:1

Uncaught TypeError: define is not a function
at :8888/nbextensions/rise/main.js?v=20170720142008:11

Uncaught TypeError: define is not a function
at extension.js:1

Access to Font at 'about:blank' from origin 'http://localhost:8888' has been blocked by CORS policy: Invalid response. Origin 'http://localhost:8888' is therefore not allowed access.`

[damianavila]

Can you post one of those failing notebook? To see if I can reproduce the issue and investigate further...

[Vaits]

To create a simple example, I deleted all content from an old notebook. Then RISE was working properly. In the end I noticed, that there was only one code cell, which caused the errors. You can get the notebook Here.

[mjbright]

I'm seeing a similar issue, let me know if you prefer me to open this as a separate issue.

I installed RISE under anaconda, with Python 3.6 using
conda install -c damianavila82 rise

but I didn't have the "Enter/Exit Slideshow" button in my notebook.
After seeing this post I created a new empty notebook which had the same problem.

In the notebook log output I saw errors.
I could create the same errors using
jupyter nbextension list:

```jupyter nbextension list
Known nbextensions:
Traceback (most recent call last):
File "/usr/bin/jupyter-nbextension", line 6, in
main()
File "/usr/lib/python3.6/site-packages/jupyter_core/application.py", line 267, in launch_instance
return super(JupyterApp, cls).launch_instance(argv=argv, *kwargs)
File "/usr/lib/python3.6/site-packages/traitlets/config/application.py", line 658, in launch_instance
app.start()
File "/usr/lib/python3.6/site-packages/notebook/nbextensions.py", line 988, in start
super(NBExtensionApp, self).start()
File "/usr/lib/python3.6/site-packages/jupyter_core/application.py", line 256, in start
self.subapp.start()
File "/usr/lib/python3.6/site-packages/notebook/nbextensions.py", line 960, in start
self.list_nbextensions()
File "/usr/lib/python3.6/site-packages/notebook/nbextensions.py", line 943, in list_nbextensions
data = cm.get(section)
File "/usr/lib/python3.6/site-packages/traitlets/config/manager.py", line 63, in get
return json.load(f)
File "/usr/lib64/python3.6/json/__init__.py", line 299, in load
parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, *kw)
File "/usr/lib64/python3.6/json/__init__.py", line 354, in loads
return _default_decoder.decode(s)
File "/usr/lib64/python3.6/json/decoder.py", line 339, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib64/python3.6/json/decoder.py", line 355, in raw_decode
obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Expecting ':' delimiter: line 14 column 15 (char 205)

I ran through my config json files using the following to find the culprit:
```for JSONF in $(find ~/.jupyter/ ~/.local/share/jupyter/ -iname '*.json' -type f); do echo $JSONF; python -mjson.tool  < $JSONF >/dev/null; done```

The culprit was ~/.jupyter/nbconfig/notebook.json which contained:

{
"Cell": {
"cm_config": {
"lineNumbers": false
}
},
"Notebook": {
"Toolbar": true,
"Header": true
},
"load_extensions": {
"nbbrowserpdf/index": true
},
"livereveal", {
"theme": "sky",
"transition": "zoom",
"start_slideshow_at": "selected",
}
}

Changing this to 

{
"Cell": {
"cm_config": {
"lineNumbers": false
}
},
"Notebook": {
"Toolbar": true,
"Header": true
},
"load_extensions": {
"nbbrowserpdf/index": true
},
"livereveal": {
"theme": "sky",
"transition": "zoom",
"start_slideshow_at": "selected"
}
}
```
fixed the problem

[damianavila]

Which platform, browser and notebook version are you using @mjbright, I would love to be able to reproduce this behavior.

[mjbright]

Hi, I'm running

• Anaconda (conda 4.3.29),
• Python 3.6
• Chrome 63.0.3239.84 (Official Build) (64-bit) on
• Fedora 27
• notebook version 5.2.2 py36_1

Hope that helps, thanks for a great tool !

[Aleczhang13]

I both have the same problem as the @mjbright, But i do the same the thing , change the json, but it don't work, can't fix it

[damianavila]

@Aleczhang13

Some questions:

1) notebook version?
2) browser version?
3) can you try hard-reloading your browser (some info here: https://www.getfilecloud.com/blog/2015/03/tech-tip-how-to-do-hard-refresh-in-browsers/#.Wnmm25M-dhE, to get rid of the cache)?
4) can you try installing in a new environment without other extensions to get rid of possible interferences?

Particularly, step 4 has been a successful fix for the issue for other people (#341).

[deepakagrawal]

I am facing same issue. I don't see the "Enter/Exit Live Reveal Slideshow" button.
I am using

1. notebook v 5.0.0
2. browser Google Chrome Version 63.0.3239.132 (Official Build) (64-bit)

[deepakagrawal]

Looks like it was an issue with the notebook version. I updated notebook and jupyter using conda. After that I reinstalled rise using conda and then it worked fine. It even works for the older notebooks.

[damianavila]

Great, now I would like more info to be able to reproduce the issue, if possible.
Can you confirm the notebook version not working was 5.0.0? And it is working OK with 5.4.0?

[deepakagrawal]

Correct.

I forgot to mention I also ran
conda update jupyter

[damianavila]

OK, thanks for the additional information. Closing now.