     var config: AppConfig! {
         didSet {
             guard config != nil else { return }
+            
+            #if DEBUG
+                NSLog("Did fetch AppConfig")
+            #endif
             
             wipe2016TechTalksVideos()
             updateSessionVideos()

                guard newVideosAvailable else { return }
                
                guard let sessionsArray = json["sessions"].array else {
                    print("Could not parse array of sessions")
                    return
                }
                

            // replace configuration on the database with the new configuration
            self.realm.beginWrite()
            do {
                if let existingConfig = existingConfig {
                    self.realm.delete(existingConfig)
                }
                
                self.realm.add(fetchedConfig)
