In the past when adding content to a panel node, in the modal popup window, there was a category "view panes" which seems to have gone missing. It seems that this issue has been beaten to death, and I've tried to ensure that I've covered everything, but I still can't get view panes to show up in my modal window, even on a site where they once did.
I have a view created with a panel pane display added. It has no arguments. I also have "Make all views available as panes" checked. All of the modules that I think need to be enabled are enabled (and even some which may not be), I've flushed my cache a number of times, tried changing the admin title and category of the view pane, all to no avail. No view panes will show up in the dialog box.