starting with Kodi 16 Jarvis alpha2, full urls (including the trailing '/') must be used.
Code:NFPS - http://portal.iptvprivateserver.tv/stalker_portal/c/ Rocket - http://portal.iptvrocket.tv/stalker_portal/c/ IPTV66 - http://mw1.iptv66.tv/stalker_portal/c/