Hello, Here is what I get when I run sooperlooper and slgui : gentoodaw ~ $ sooperlooper SooperLooper 1.0.3 Copyright 2005 Jesse Chappell OSC server URI (network) is: osc.udp://gentoodaw:9951/ OSC error -2: Name or service not known gentoodaw ~ $ slgui slgui: our URL is osc.udp://gentoodaw:14303/ slgui: spawned new engine OSC error -2: Name or service not known sooperlooper warning: could not open for reading: /home/dubphil/.sooperlooper/default_midi.slb slgui: remote looper is at osc.udp://gentoodaw:9951/ version=1.0.3 loopcount=1 and the gui give me this popup message after about 10 seconds of connection : "Lost connection to SooperLooper engine. See the Preferences->Connections tab to start a new one" If I start a new one it stands about 10 seconds and I lost again the connection. If I quit and stop engine it remains some process of sooperlooper. default_midi.slb is really not here is it needed for sooperlooper to work properly ? jack : 0.99.0 qjackctl : 0.2.17 gentoodaw ~ $ uname -a Linux gentoodaw 2.6.12-rc3-RT-V0.7.46-02 #1 SMP Sun Jul 17 00:13:11 CEST 2005 i686 Intel(R) Pentium(R) 4 CPU 2.66GHz GenuineIntel GNU/Linux any idea what is going wrong ? Regards Philippe