All tickets › Category: Technical › wpvr/wpvr.php (v5.2.0) is required. Please update it before activating this plugin. I wonder what this is. 0 Vote Up Vote Down Orkun Biberci asked 2 years ago I wonder what this is. 1 Answers 0 Vote Up Vote Down C S Sultan Staff answered 2 years ago Hi, this means that you need to have the free version of WPVR installed and activated first, and then you can upload and activate the Pro plugin.