It is most likely that some dependencies of these libraries are not found (e.g. Python). To find out more, type these commands and post the output: ldd /usr/local/lib/csound/plugins/libpy.so ldd /usr/local/lib/csound/plugins/libloris.so Alternatively, if you do not actually need the Python and Loris opcodes, you could just ignore the messages or delete those two plugins. On Tuesday 21 February 2006 20:27, Toby wrote: > WARNING: could not open library '/usr/local/lib/csound/plugins/libpy.so' > WARNING: could not open library '/usr/local/lib/csound/plugins/libloris.so' (-1) > > Csound version 5.00.0 (float samples) Jan 31 2006 > > [toby@sinewave plugins]$ pwd > /usr/local/lib/csound/plugins > [toby@sinewave plugins]$ ls -l libpy.so libloris.so > -rwxr-xr-x 1 toby toby 205280 Jan 31 07:47 libloris.so > -rwxr-xr-x 1 toby toby 37576 Jan 31 07:47 libpy.so > [toby@sinewave plugins]$