When debugging my site to figure out why I'm occasionally (and seemingly, quite randomly) not able to save any edits I'm making to my site I came across this. Well, there are actually 37 similar errors to this: Example PHP Deprecated Creation of dynamic property EDD_SL_Plugin_Updater_Oxygen Using the latest PHP and the latest version of Oxygen. The error occurred since updating oxygen so naturally I tried restoring and using an older version. I´ve also done the usual, signing all short codes, clearing all caches etc. I'm just about to go in with a new staging copy to try it out with all my existing templates and components on a 'new' site.