Hi, if i try to add OptimizedPress shortcodes i get an error: If i disable the aMember PRO v4 Integration Plugin for Wordpress the errors are away. It it documented at OptimizedPress here: https://optimizepress.zendesk.com/entries/20701182-preg-match-errors-in-shortcodes-window Maybe you are using the same variable names. I think it is a good idear that you get in touch with the OptimizedPress developer team Kind Regards