I've been searching but could not find a solution. Updating from Wysiwyg 7.2.1 to 7.2.2 breaks all paths for the editor. Means images are not found and CSS-Styles either. Define-CSS-paths remained unchanged. Using the dev-Version didn't help either. Switching back to 7.2.1 brings everything back. What did you change inbetween?
Nice module otherwise.