Since this morning I'm getting a warningbox with the text: invalid_expired_msg. I've cleared the cache, deleted all cookies and logged-out/in and tried different browsers. I have no idea what it means and how to fix it. On every page refresh its present in the manager.
I can't find that identifier anywhere in the MODX code (2.4.4), though it could be from a MODX extra that I don't have.
If it's a popup, you should be able to view the source of the page (Ctrl-u) and find the JavaScript code that's causing it. That might provide a clue.
One thing to try is disabling plugins (in the modx_site_plugins table in the DB, if you can't do it in the Manager), especially those connected to a Manager Page event.
If none of that works, I'd file a ticket with the host.
