[LAU] zynaddsubfx crashes when loading a new bank

[schoappied]

Everytime I want to change an instrument/ bank in zynsubaddfx (beginner 
mode), it crashes...

$ zynaddsubfx

ZynAddSubFX - Copyright (c) 2002-2005 Nasca Octavian Paul
Compiled: Dec 18 2007 21:09:57
This program is free software (GNU GPL v.2) and
    it comes with ABSOLUTELY NO WARRANTY.

Try 'zynaddsubfx --help' for command-line options.
Sound Buffer Size =     256 samples
Internal latency =      5.8 ms
ADsynth Oscil.Size =    512 samples
Internal SampleRate   = 44100
Jack Output SampleRate= 44100
cannot complete execution of the processing graph (Resource temporarily 
unavailable)
zombified - calling shutdown handler