Thanks for the nice plugin! There seems to be a little problem in my wp multisite - the console of my developer toolbar (Firefox or Chrome) gives a 500 error for the "custom_styles.css". It is looking for the file in each multisite:
/my-wp-site/multisite//wp-content/uploads/sites/[multisite-id]/advgb/custom_styles.css
The file can only be found in
/my-wp-site/multisite//wp-content/uploads/advgb/custom_styles.css
Which would be the right way to configure it for multiisites? Why has the custom_styles.css has to be loaded at all - as the custom styles are written in the database?
Thank you for any hint!