Hello all, After a long time, I upgraded the pjsip stack from 0.9x to 1.0x (latest svn as of yesterday) and I am getting some strange crashes occasionally. I'll have to use the debug build for a while, to get the details of the crash but for now it seems as though 'pjmedia_snd_stream *strm' is not proper (0x0fa). My app is pjsua_lib based, and the crash happens inside pjsua_set_ec (SIPLocalEcho,0) which is called within the on_call_media_state callback I'll add the important bits of my code to make things more understandable ... void SIPCaller::on_call_media_state(pjsua_call_id call_id) { CCErr=pjsua_call_get_info(call_id, &CMSCallInfo); if (CMSCallInfo.media_status == PJSUA_CALL_MEDIA_ACTIVE) { CCErr=pjsua_conf_connect(CMSCallInfo.conf_slot, 0); CCErr=pjsua_conf_connect(0, CMSCallInfo.conf_slot); pjsua_set_ec (SIPLocalEcho,0); } } the crash happens at (on the if statement): if (strm->play_strm) { paPlaySI = Pa_GetStreamInfo(strm->play_strm); } inside the pjmedia_snd_stream_get_info (pasound.c). ... any ideas? Greets, Toni