I'm using Csound on Linux OS. I have my Csound binaries installed in the folder /usr/local/csound/bin and my Opcodes installed in /usr/local/csound/opc and my OPCODEDIR is set to /usr/local/csound/opc my csound works well, i've no problem but i get this error when i run it: Localisation of messages is disabled, using default language. WARNING: could not open library '/usr/local/csound/opc/libloris.so' (/usr/lib/gcc/i686-pc-linux-gnu/3.4.6/libstdc++.so.6: version `CXXABI_1.3.1' not found (required by /usr/local/csound/opc/libloris.so)) virtual_keyboard real time MIDI plugin for Csound 4544: impossible error - can't find 'libFLAC.so.7' 4544: impossible error - can't find 'libm.so.6' 4544: impossible error - can't find 'libc.so.6' WARNING: could not open library '/usr/local/csound/opc/librtpa.so' ( libportaudio.so.2: cannot open shared object file: No such file or directory) PortMIDI real time MIDI plugin for Csound WARNING: could not open library '/usr/local/csound/opc/libcsnd.so' ( libpython2.5.so.1.0: cannot open shared object file: No such file or directory) 4544: impossible error - can't find 'libFLAC.so.7' 4544: impossible error - can't find 'libm.so.6' 4544: impossible error - can't find 'libc.so.6' WARNING: could not open library '/usr/local/csound/opc/libpy.so' ( libpython2.5.so.1.0: cannot open shared object file: No such file or directory) 4544: impossible error - can't find 'libc.so.6' WARNING: could not open library '/usr/local/csound/opc/libfluidOpcodes.so' ( libfluidsynth.so.1: cannot open shared object file: No such file or directory) What can i do to stop these errors. Thanx. -- Arda EDEN Cumhuriyet University Faculty of Fine Arts Department of Music Technology