I have two installation of SIG. One ot them has the JCE Editor wothout the SIG plugin button during articles editing, and another installation the JCE editor render the SIG plugin button. This is a mistery because I did not find the way to solve this issue. I analyzed all the plugins and all the JCE settings. Please have suggestions? Thanks.

Have you checked the Editor-XTD plugins?

Hi,

I have the same problem, no SIG button in JCE.

What are the Editor-XTD plugins and how are they checked?

Thanks!

Hello,

They are Joomla! plugins which can be found in the plugin manager.
Sort them by Editor-XTD so you can find them.

too have the same problem, the gallery-pro button dont' appears at the bottom front end of articles joomla's editor, (JCE) even if the button is active to rollover and opens the window of the component. The editors Plugin is ok.
The problem can be solved with version 3.1 ?
Thanks
imgur.com/a/4asAf

Which version are you currently using?

version 3.0.7 with joomla 3.6.5.
I think it can depend on the template, because it does not appear other editor's buttons, also disabling image gallery pro plugin, but it's all ok and the template is updated.

Hello Pietro,

I am not sure I understand your post.
Are you using a template which alters the default buttons?