On Saturday 04 Aug 2018 19:38:46 Michele Calgaro wrote: > Am Samstag 04 August 2018 schrieb Felix Miata: > > (firefox:27799): Gtk-ERROR **: 04:42:18.938: GTK+ 2.x symbols detected. > > Using GTK+ 2.x and GTK+ 3 in the same process is not supported > Hello, I'm running Trinity R14.0.4 installed over Debian 8.7, and I'm very happy with Trinity. By coincidence, late yesterday and earlier today, I had exactly the same problem as Felix, for a different program. I had installed kgtk-qt3-trinity earlier yesterday, so suspected that might be causing the problem, so I removed that package, and the problem disappeared. Now I have seen Stefan's message, suggesting exactly that. But after removing kgtk-qt3-trinity, I have a minor new problem: simple Linux programs like cp and diff, in Konsole, give an erroneous error message before their output: ERROR: ld.so: object '/opt/trinity/lib/kgtk/libkgtk2.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored. I have never seen anything like that before, so I think it must be a consequence of installing and then removing kgtk-qt3-trinity. The description of the package says, "This is an LD_PRELOAD hack ... ." Purging the package has not fixed the problem. The erroneous error message appears in Konsole- Trinity, Konsole-KDE4, UXTerm, and XTerm, all running in Trinity. The Linux programs, e.g. cp and diff, still seem to be working properly, so it is probably not a serious issue. The erroneous error messages just clutter up the Konsole window. > You have both gtk2 and gtk3 engine installed and TDE is not happy. TRy > removing one of them and it will work. Had the same issue a few weeks ago > when I was testing something related to GTK > I cannot remove gtk2-engines or gtk3-engines*, because: root@debian:/home/chris/Debian# dpkg --no-act -r gtk2-engines dpkg: dependency problems prevent removal of gtk2-engines:amd64: gnome-core depends on gtk2-engines (>= 2.20.2). dpkg: error processing package gtk2-engines:amd64 (--remove): dependency problems - not removing Errors were encountered while processing: gtk2-engines:amd64 root@debian:/home/chris/Debian# dpkg --no-act -r gtk3-engines dpkg: warning: ignoring request to remove gtk3-engines which isn't installed root@debian:/home/chris/Debian# dpkg --no-act -r gtk3-engines-oxygen dpkg: warning: ignoring request to remove gtk3-engines-oxygen which isn't installed root@debian:/home/chris/Debian# dpkg --no-act -r gtk3-engines-xfce dpkg: warning: ignoring request to remove gtk3-engines-xfce which isn't installed (gtk3-engines without -something does not seem to be a Debian Jessie package, at the moment.) I don't use Gnome, although I have some Gnome applications installed, so I could possibly remove gnome-core and reinstall kgtk-qt3- trinity, if there's no other way to fix the problem with the erroneous error message. But I wondered if there might be some way to clean up the removal of kgtk-qt3-trinity. With best regards, Chris Austin