can't say if that might help you in any way, but check whether switching the View > Options... > Display > Style theme to anything else than default or gtk2 might help.
also check and read the whole of this linuxmusicians.com forum thread. there you may find some hints, at least better than the ones from a non-debian fellow like me (i now see that you already posted there the very same same question as here, so i wonder whether you overlooked one or the other).
re. [Qtr About box] LV2 Plug-in UI GTK2 native support disabled
depending on which libSUIL version you have installed, this might not be an issue.
though, to have LV2 Plug-in UI GTK2 native support enabled, you must build qtractor with libgtk2.0-dev and all the dependencies installed. you can try yourself, to build qtractor from source, and if things seems to behave differently (for the better, if that matters:) you can ask the kxstudio team to remake the kx package with that option enabled. that might be an interesting proposition to do later.
but again, i'm not sure what's wrong, on either side of the crash line :)
hi Staffan,
can't say if that might help you in any way, but check whether switching the View > Options... > Display > Style theme to anything else than default or gtk2 might help.
also check and read the whole of this linuxmusicians.com forum thread. there you may find some hints, at least better than the ones from a non-debian fellow like me (i now see that you already posted there the very same same question as here, so i wonder whether you overlooked one or the other).
re. [Qtr About box] LV2 Plug-in UI GTK2 native support disabled
depending on which libSUIL version you have installed, this might not be an issue.
though, to have LV2 Plug-in UI GTK2 native support enabled, you must build qtractor with libgtk2.0-dev and all the dependencies installed. you can try yourself, to build qtractor from source, and if things seems to behave differently (for the better, if that matters:) you can ask the kxstudio team to remake the kx package with that option enabled. that might be an interesting proposition to do later.
but again, i'm not sure what's wrong, on either side of the crash line :)
hth.
cheers