Apologies for coming in on this topic, but I can't find a topic that describes my problem accurately elsewhere.
I'm running 2.6+ on a shared server. Until today File Picker worked normally. Now it seems to be locked-up. If I "select files" when adding files / folders etc, file picker appears with all it's icons (Server files/ Recent files etc) for a moment, and then it greys-out leaving only the fliename box with "Download" beneath it.
I created a whole new Moodle site, new blankdb, new data folder, with no add-ons, but no difference. Exactly the same on a blank site.
Any ideas please ?