qtractor 0.5.4 as well as 0.5.5 fails to start. The window shows up part of a second and closes immediately.
here the terminal output:
ardour 2.8.14 and 3.10 crash with the same error messages.
Think it is a Problem with vst integration but
wine/wineasio/reaper work flawlessly
Edit: It's an issue with dssi-vst. After deinstalling dssi-vst and dssi-vst-bridge:i386 the actual versions of qtractor and ardour are running.