I have the same problem with qtractor completely locking when loading LinuxSampler (DSSI or LV2) plugin. As suggested in the previous posts, I turned of "Capture standard output" and the error message coming to the console was something like "cannot bind server socket. retrying in 180". As I suspected from the error message, the problem was that I already had the linuxsampler server running. Killing the linuxsampler instance (which was automatically started by QSampler) before stating qtractor (and loading the plugin) did prevented the crash.
Hi!
I have the same problem with qtractor completely locking when loading LinuxSampler (DSSI or LV2) plugin. As suggested in the previous posts, I turned of "Capture standard output" and the error message coming to the console was something like "cannot bind server socket. retrying in 180". As I suspected from the error message, the problem was that I already had the linuxsampler server running. Killing the linuxsampler instance (which was automatically started by QSampler) before stating qtractor (and loading the plugin) did prevented the crash.
BR, jaakko