No GUI on fluidsynth-dssi plugin

I’m trying to use fluidsynth-dssi plugin with Rosegarden and Qtractor. This plugin should open a preferences window on which the user loads the proper soundfont. This window doesn’t appear and the message shown in Qtractor messages window is:

fsd-gui starting (pid 2183)...

By the way, I’m using Xfce desktop manager.
Thank you very much in advance,
Luis Pablo

Due the lack of replies I’m afraid this is not the right sub forum. How could I move this thread to Multimedia Sub forum? I just want to avoid cross posting this thread.
Thank you in advance,
Luis Pablo

If you are running Tumbleweed this is the right forum. Lack of reply is more likely due to a lack of members using the plugin. I know of at least one, and your title is nice and specific. You may not get an answer this quickly. :wink:

After searching for solutions or similar issues in other distros I found the cause of the problem was related to the hosts definitions. So I changed /etc/hosts file, these are the relevant lines:

# IP-Address  Full-Qualified-Hostname  Short-Hostname
#    localhost localhost.localdomain linux-08g9

# special IPv6 addresses

 ::1 localhost6.localdomain6 localhost6 linux-08g96 linux-08g96.site6

Where “linux-08g9” is my computer host name. I guess this issue is also present in OS 12.3.

Oh MAN! I could kiss ya! been looking everywhere for this solution… IT WORKS!
Now using Carla with DSSIs… THANK YOU so much for taking the time to post this here, much appreciated.