I am trying to show a calendar page with records stored in a custom table, using the Calendar module.

The table has been integrated with Views using hook_views_data. I also implemented hook_date_views_extra_tables and hook_date_views_fields to identity the relevant date fields to the Date module.

So far, I can create a new View with Calendar format (style plugin). When I add the Date: Date contextual filter (argument), I am able to see the field I specified in the hook_date_views_fields. So far so good.

Now when I save the view and show it, no calendar shows. When I get back to edit the view, the Date argument has been replaced with a "Broken/missing handler" notice.

Has anyone succeeded to show a calendar from a custom table?

N.B. This issue was created for the same purpose but it looks like the OP did not pursue it (or at least did not update it).