I have those crashes, too. But they happen randomly. Sometimes when I just browse my hard disc, sometimes when one movie is finished and the next one should autostart after that (I don’t know if this happends when file 1 ends oder file 2 is about to load/start), sometimes when I’m just viewing my WiiMC seettings…
Strange thing is, with WiiMC 1.1.4 this never happens. And I’m running WiiMC via the official and most current forwarder channel, so I don’t think this is HBC no_ios_reload related – or could it?