WP 3.9 (and below), wp-filebase pro 3.1.13. If I set the file browser to initially expanded, all the files are there and the tree collapses and expands as it should. But if I uncheck that, all we get is endless spinner when category is clicked. Tried all the standard WP troubleshooting, and a bunch of other settings in wp-filebase. Any clues out there? Is there a “collapse all” button?