Recently encountered a bug with export not working in the Blender Pipeline plugin. Solved it myself by clearing the OpenPlugin folder of the old version. But I spent an obscene amount of time looking for a solution until I came across the Readme file in the folder with the plugin.

One of the attempts to solve the problem was to reinstall both the plugin itself and the entire CC4. And it would have been resolved much sooner if Hub had automatically cleared the plugins folder of the old version. So the suggestion is exactly that.