Cannot create any articles

[yitjob]

When clicking in the Articles menu item, and then in New Article, the new article form is opened.

Afterwards one would select an entry from the Tree field, but it doesn't show the list of pages.

Furthermore, clicking in the + sign of the tree field, a new page is created but an error message is shown, with the tree field highlighted as an error, and the dropdown list of that field is empty.

The apphook is set to a page as advised in the installation procedure.

[misli]

Thank You for filing this issue. To be honest, it is my fault. This should be either documented or made more intuitive. I'll get back to this soon to fix it either way.
For the CMS Page to become an article tree You must attach a CMS Articles tree application instance to it. (And the page also needs to be published, which I intend to change in the future, so that it is not needed.)

[yitjob]

Ok, thank You for your answer. Now I wonder how do I attach a CMS Articles tree application instance to a page? Thank you in advance.

[misli]

Actually, this should be documented in django CMS user's manual, which AFAIK doesn't exist at all.
You need to open the page for editing and switch to advanced settings. All my instances are Czech localized, so I don't know the exact label of the fields, but there is a drop-down with list of available applications followed by application instance name. The instance name is used to distinguish between several instances of the same application.