Looks like suddenly, when i try to run more than one instance of Fluidsynth DSSI plugin, it crashes with:
Ouch. The DSSI plugin 'FluidSynth DSSI plugin'' crashed in DSSI event/function: 'Process', Thread: 'AUDIO Slaves'
IMPORTANT: This is a fatal error. Please save the current document under a !new! name to prevent losing important data. Renoise will silently ignore any following errors from this plug-in.
DO NOT IGNORE THIS ERROR; DO NOT CONTINUE USING THE PLUGIN. THIS CAN DESTROY YOUR SONG OR CAUSE OTHER RANDOM CRASHES AND PROBLEMS!
It's most likely that this is a bug in the DSSI plugin, so please report this problem to the authors of this plugin in order to get the problem fixed!
…then all instances of fluidsynth go silent.
Using the build of Fluidsynth from the ubuntustudio repo.