Did you enable m3u in IPTV Stalker Papiao 10.0.1? This is accomplished on the configuration pane. Shut down PVR's and TV; clear TV and Guide data. Now configure IPTV Stalker Papiao... The M3U panel is to the right of the Parental panel. On the m3u panel, click enable, leave the port alone and press start.
Ultimately, though, there are times when the m3u service is not functioning properly and no channels load. It is a bit on the flakey side.