Appimage crashes on start on Ubuntu 21.10

I am attempting to start the app image file and it will not load. The primary error seems to be:

(rawtherapee:215631): GLib-GIO-ERROR **: 12:32:46.235: Settings schema ‘org.gnome.settings-daemon.plugins.xsettings’ does not contain a key named ‘antialiasing’
/tmp/.mount_RawThe5iSPwC/AppRun: line 146: 215631 Trace/breakpoint trap (core dumped)

Appreciate any ideas on how to resolve this.

Linux gryffon 5.13.0-21-generic #21-Ubuntu SMP Tue Oct 19 08:59:28 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

alan@gryffon:~/Application Images$ ./RawTherapee_5.8.AppImage 
Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway.
AILIBDIR=/tmp/tmp.I5CthoIRAn
deleting /tmp/tmp.I5CthoIRAn/libxcb-dri3.so*
System stdc++ library: "/lib/x86_64-linux-gnu/libstdc++.so.6"
System stdc++ library version: "3.4.29"
Bundled stdc++ library version: "3.4.19"
Newest stdc++ library version: "3.4.29"
Using system stdc++ library
atomiclib: /lib/x86_64-linux-gnu/libatomic.so.1
Checking versions of library "libfontconfig"
  system library: "/lib/x86_64-linux-gnu/libfontconfig.so.1.12.0" (libfontconfig.so.1.12.0)
  system library version: 1.12.0
  ailib: "/tmp/.mount_RawThe5iSPwC/usr/lib/libfontconfig.so.1.11.1"
  bundled library: "/tmp/.mount_RawThe5iSPwC/usr/lib/libfontconfig.so.1.11.1" (libfontconfig.so.1.11.1)
  bundled library version: 1.11.1
  newest library version: "1.12.0"
Removing bundled "libfontconfig"
removed '/tmp/tmp.I5CthoIRAn/libfontconfig.so.1'
removed '/tmp/tmp.I5CthoIRAn/libfontconfig.so.1.11.1'
Checking versions of library "libfreetype"
  system library: "/lib/x86_64-linux-gnu/libfreetype.so.6.17.4" (libfreetype.so.6.17.4)
  system library version: 6.17.4
  ailib: "/tmp/.mount_RawThe5iSPwC/usr/lib/libfreetype.so.6.14.0"
  bundled library: "/tmp/.mount_RawThe5iSPwC/usr/lib/libfreetype.so.6.14.0" (libfreetype.so.6.14.0)
  bundled library version: 6.14.0
  newest library version: "6.17.4"
Removing bundled "libfreetype"
removed '/tmp/tmp.I5CthoIRAn/libfreetype.so.6'
removed '/tmp/tmp.I5CthoIRAn/libfreetype.so.6.14.0'
DO_UPDATE: 1
GTK_PATH=/tmp/.mount_RawThe5iSPwC/usr/lib/gtk-2.0
GTK_IM_MODULE_FILE=/tmp/.mount_RawThe5iSPwC/usr/lib/gtk-2.0:/tmp/.mount_RawThe5iSPwC/usr/lib/gtk-2.0
PANGO_LIBDIR=/tmp/.mount_RawThe5iSPwC/usr/lib
	linux-vdso.so.1 (0x00007ffc13977000)
	libcanberra-gtk3.so.0 => /tmp/tmp.I5CthoIRAn/libcanberra-gtk3.so.0 (0x00007fda46f1e000)
	libX11.so.6 => /lib/x86_64-linux-gnu/libX11.so.6 (0x00007fda46dc8000)
	libcanberra.so.0 => /tmp/tmp.I5CthoIRAn/libcanberra.so.0 (0x00007fda46bb7000)
	libgtk-3.so.0 => /tmp/tmp.I5CthoIRAn/libgtk-3.so.0 (0x00007fda462a0000)
	libgdk-3.so.0 => /tmp/tmp.I5CthoIRAn/libgdk-3.so.0 (0x00007fda45fb2000)
	libatk-1.0.so.0 => /tmp/tmp.I5CthoIRAn/libatk-1.0.so.0 (0x00007fda45d8a000)
	libgio-2.0.so.0 => /tmp/tmp.I5CthoIRAn/libgio-2.0.so.0 (0x00007fda459eb000)
	libpangocairo-1.0.so.0 => /tmp/tmp.I5CthoIRAn/libpangocairo-1.0.so.0 (0x00007fda457dd000)
	libgdk_pixbuf-2.0.so.0 => /tmp/tmp.I5CthoIRAn/libgdk_pixbuf-2.0.so.0 (0x00007fda455b5000)
	libcairo-gobject.so.2 => /tmp/tmp.I5CthoIRAn/libcairo-gobject.so.2 (0x00007fda453ac000)
	libpango-1.0.so.0 => /tmp/tmp.I5CthoIRAn/libpango-1.0.so.0 (0x00007fda45166000)
	libcairo.so.2 => /tmp/tmp.I5CthoIRAn/libcairo.so.2 (0x00007fda44e2d000)
	libgobject-2.0.so.0 => /tmp/tmp.I5CthoIRAn/libgobject-2.0.so.0 (0x00007fda44bdc000)
	libglib-2.0.so.0 => /tmp/tmp.I5CthoIRAn/libglib-2.0.so.0 (0x00007fda448c6000)
	libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007fda44896000)
	libatomic.so.1 => /tmp/tmp.I5CthoIRAn/libatomic.so.1 (0x00007fda4468e000)
	libfftw3f.so.3 => /tmp/tmp.I5CthoIRAn/libfftw3f.so.3 (0x00007fda44315000)
	libfftw3f_omp.so.3 => /tmp/tmp.I5CthoIRAn/libfftw3f_omp.so.3 (0x00007fda4410c000)
	libgiomm-2.4.so.1 => /tmp/tmp.I5CthoIRAn/libgiomm-2.4.so.1 (0x00007fda43d4d000)
	libglibmm-2.4.so.1 => /tmp/tmp.I5CthoIRAn/libglibmm-2.4.so.1 (0x00007fda43acb000)
	libsigc-2.0.so.0 => /tmp/tmp.I5CthoIRAn/libsigc-2.0.so.0 (0x00007fda438c4000)
	libgthread-2.0.so.0 => /tmp/tmp.I5CthoIRAn/libgthread-2.0.so.0 (0x00007fda436c2000)
	libgtkmm-3.0.so.1 => /tmp/tmp.I5CthoIRAn/libgtkmm-3.0.so.1 (0x00007fda42f14000)
	libatkmm-1.6.so.1 => /tmp/tmp.I5CthoIRAn/libatkmm-1.6.so.1 (0x00007fda42cc4000)
	libgdkmm-3.0.so.1 => /tmp/tmp.I5CthoIRAn/libgdkmm-3.0.so.1 (0x00007fda42a70000)
	libpangomm-1.4.so.1 => /tmp/tmp.I5CthoIRAn/libpangomm-1.4.so.1 (0x00007fda42842000)
	libcairomm-1.0.so.1 => /tmp/tmp.I5CthoIRAn/libcairomm-1.0.so.1 (0x00007fda4261c000)
	libiptcdata.so.0 => /tmp/tmp.I5CthoIRAn/libiptcdata.so.0 (0x00007fda42410000)
	libjpeg.so.62 => /tmp/tmp.I5CthoIRAn/libjpeg.so.62 (0x00007fda421bb000)
	liblcms2.so.2 => /tmp/tmp.I5CthoIRAn/liblcms2.so.2 (0x00007fda41f5f000)
	libpng15.so.15 => /tmp/tmp.I5CthoIRAn/libpng15.so.15 (0x00007fda41d34000)
	libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fda41d18000)
	libtiff.so.5 => /tmp/tmp.I5CthoIRAn/libtiff.so.5 (0x00007fda41aa1000)
	liblensfun.so.1 => /tmp/tmp.I5CthoIRAn/liblensfun.so.1 (0x00007fda41884000)
	librsvg-2.so.2 => /tmp/tmp.I5CthoIRAn/librsvg-2.so.2 (0x00007fda4164f000)
	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fda41569000)
	libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fda41350000)
	libgomp.so.1 => /tmp/tmp.I5CthoIRAn/libgomp.so.1 (0x00007fda4112a000)
	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fda41110000)
	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fda4110b000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fda40ee3000)
	libvorbisfile.so.3 => /tmp/tmp.I5CthoIRAn/libvorbisfile.so.3 (0x00007fda40cd8000)
	libvorbis.so.0 => /tmp/tmp.I5CthoIRAn/libvorbis.so.0 (0x00007fda40aab000)
	libogg.so.0 => /tmp/tmp.I5CthoIRAn/libogg.so.0 (0x00007fda408a4000)
	libtdb.so.1 => /tmp/tmp.I5CthoIRAn/libtdb.so.1 (0x00007fda4068d000)
	libltdl.so.7 => /tmp/tmp.I5CthoIRAn/libltdl.so.7 (0x00007fda40483000)
	libxcb.so.1 => /tmp/tmp.I5CthoIRAn/libxcb.so.1 (0x00007fda4025b000)
	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fda40254000)
	libgmodule-2.0.so.0 => /tmp/tmp.I5CthoIRAn/libgmodule-2.0.so.0 (0x00007fda40050000)
	libXi.so.6 => /tmp/tmp.I5CthoIRAn/libXi.so.6 (0x00007fda3fe40000)
	libXfixes.so.3 => /tmp/tmp.I5CthoIRAn/libXfixes.so.3 (0x00007fda3fc3a000)
	libatk-bridge-2.0.so.0 => /tmp/tmp.I5CthoIRAn/libatk-bridge-2.0.so.0 (0x00007fda3fa0b000)
	libwayland-client.so.0 => /tmp/tmp.I5CthoIRAn/libwayland-client.so.0 (0x00007fda3f7fc000)
	libepoxy.so.0 => /tmp/tmp.I5CthoIRAn/libepoxy.so.0 (0x00007fda3f4ce000)
	libpangoft2-1.0.so.0 => /tmp/tmp.I5CthoIRAn/libpangoft2-1.0.so.0 (0x00007fda3f2b8000)
	libfontconfig.so.1 => /lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007fda3f270000)
	libXinerama.so.1 => /tmp/tmp.I5CthoIRAn/libXinerama.so.1 (0x00007fda3f06d000)
	libXrandr.so.2 => /tmp/tmp.I5CthoIRAn/libXrandr.so.2 (0x00007fda3ee62000)
	libXcursor.so.1 => /tmp/tmp.I5CthoIRAn/libXcursor.so.1 (0x00007fda3ec55000)
	libXcomposite.so.1 => /tmp/tmp.I5CthoIRAn/libXcomposite.so.1 (0x00007fda3ea52000)
	libXdamage.so.1 => /tmp/tmp.I5CthoIRAn/libXdamage.so.1 (0x00007fda3e84f000)
	libxkbcommon.so.0 => /tmp/tmp.I5CthoIRAn/libxkbcommon.so.0 (0x00007fda3e60f000)
	libwayland-cursor.so.0 => /tmp/tmp.I5CthoIRAn/libwayland-cursor.so.0 (0x00007fda3e407000)
	libwayland-egl.so.1 => /tmp/tmp.I5CthoIRAn/libwayland-egl.so.1 (0x00007fda3e205000)
	libXext.so.6 => /tmp/tmp.I5CthoIRAn/libXext.so.6 (0x00007fda3dff3000)
	librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007fda3dfec000)
	libffi.so.6 => /tmp/tmp.I5CthoIRAn/libffi.so.6 (0x00007fda3dde4000)
	libpcre.so.1 => /tmp/tmp.I5CthoIRAn/libpcre.so.1 (0x00007fda3db82000)
	libselinux.so.1 => /tmp/tmp.I5CthoIRAn/libselinux.so.1 (0x00007fda3d95b000)
	libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007fda3d946000)
	libmount.so.1 => /tmp/tmp.I5CthoIRAn/libmount.so.1 (0x00007fda3d701000)
	libfreetype.so.6 => /lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007fda3d63e000)
	libpixman-1.so.0 => /tmp/tmp.I5CthoIRAn/libpixman-1.so.0 (0x00007fda3d395000)
	libEGL.so.1 => /tmp/tmp.I5CthoIRAn/libEGL.so.1 (0x00007fda3d181000)
	libxcb-shm.so.0 => /tmp/tmp.I5CthoIRAn/libxcb-shm.so.0 (0x00007fda3cf7d000)
	libxcb-render.so.0 => /tmp/tmp.I5CthoIRAn/libxcb-render.so.0 (0x00007fda3cd6d000)
	libXrender.so.1 => /tmp/tmp.I5CthoIRAn/libXrender.so.1 (0x00007fda3cb62000)
	libGL.so.1 => /lib/x86_64-linux-gnu/libGL.so.1 (0x00007fda3cadb000)
	libthai.so.0 => /tmp/tmp.I5CthoIRAn/libthai.so.0 (0x00007fda3c8cf000)
	libfribidi.so.0 => /tmp/tmp.I5CthoIRAn/libfribidi.so.0 (0x00007fda3c6b3000)
	liblzma.so.5 => /tmp/tmp.I5CthoIRAn/liblzma.so.5 (0x00007fda3c48b000)
	libcroco-0.6.so.3 => /tmp/tmp.I5CthoIRAn/libcroco-0.6.so.3 (0x00007fda3c250000)
	libxml2.so.2 => /tmp/tmp.I5CthoIRAn/libxml2.so.2 (0x00007fda3bee6000)
	/lib64/ld-linux-x86-64.so.2 (0x00007fda47125000)
	libcrypt.so.1 => /lib/x86_64-linux-gnu/libcrypt.so.1 (0x00007fda3beac000)
	libXau.so.6 => /tmp/tmp.I5CthoIRAn/libXau.so.6 (0x00007fda3bca6000)
	libatspi.so.0 => /tmp/tmp.I5CthoIRAn/libatspi.so.0 (0x00007fda3ba75000)
	libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007fda3ba27000)
	libharfbuzz.so.0 => /tmp/tmp.I5CthoIRAn/libharfbuzz.so.0 (0x00007fda3b78a000)
	libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007fda3b781000)
	libblkid.so.1 => /tmp/tmp.I5CthoIRAn/libblkid.so.1 (0x00007fda3b53f000)
	libpng16.so.16 => /lib/x86_64-linux-gnu/libpng16.so.16 (0x00007fda3b504000)
	libbrotlidec.so.1 => /lib/x86_64-linux-gnu/libbrotlidec.so.1 (0x00007fda3b4f6000)
	libGLdispatch.so.0 => /tmp/tmp.I5CthoIRAn/libGLdispatch.so.0 (0x00007fda3b240000)
	libGLX.so.0 => /tmp/tmp.I5CthoIRAn/libGLX.so.0 (0x00007fda3b00e000)
	libsystemd.so.0 => /tmp/tmp.I5CthoIRAn/libsystemd.so.0 (0x00007fda3addb000)
	libgraphite2.so.3 => /tmp/tmp.I5CthoIRAn/libgraphite2.so.3 (0x00007fda3abad000)
	libbrotlicommon.so.1 => /lib/x86_64-linux-gnu/libbrotlicommon.so.1 (0x00007fda3ab8a000)
	libcap.so.2 => /tmp/tmp.I5CthoIRAn/libcap.so.2 (0x00007fda3a985000)
	liblz4.so.1 => /tmp/tmp.I5CthoIRAn/liblz4.so.1 (0x00007fda3a770000)
	libgcrypt.so.11 => /tmp/tmp.I5CthoIRAn/libgcrypt.so.11 (0x00007fda3a4ed000)
	libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007fda3a4c5000)
	libdw.so.1 => /tmp/tmp.I5CthoIRAn/libdw.so.1 (0x00007fda3a274000)
	libattr.so.1 => /tmp/tmp.I5CthoIRAn/libattr.so.1 (0x00007fda3a06f000)
	libelf.so.1 => /tmp/tmp.I5CthoIRAn/libelf.so.1 (0x00007fda39e57000)
	libbz2.so.1 => /tmp/tmp.I5CthoIRAn/libbz2.so.1 (0x00007fda39c45000)

==========

LD_LIBRARY_PATH: /tmp/tmp.I5CthoIRAn:/usr/lib::/tmp/.mount_RawThe5iSPwC/usr/lib/gdk-pixbuf-2.0/loaders
DIRNAME: /tmp/.mount_RawThe5iSPwC/usr/bin
DESKTOPFILE_NAME: rawtherapee.desktop
APP_FULL: RawTherapee
APP: RawTherapee
APP_FULL: RawTherapee
APP: RawTherapee
BIN: /tmp/.mount_RawThe5iSPwC/usr/bin/rawtherapee
DESKTOPINTEGRATION: AppImageLauncher
GLib-GIO-Message: 12:32:46.235: Using the 'memory' GSettings backend.  Your settings will not be saved or shared with other applications.

(rawtherapee:215631): GLib-GIO-ERROR **: 12:32:46.235: Settings schema 'org.gnome.settings-daemon.plugins.xsettings' does not contain a key named 'antialiasing'
/tmp/.mount_RawThe5iSPwC/AppRun: line 146: 215631 Trace/breakpoint trap   (core dumped) LD_PRELOAD="${APPDIR}/usr/lib/exec_wrapper2.so" "${APPDIR}/usr/bin/rawtherapee.wrapper" "$@"

Hi, welcome, and happy new year!

Are you running on Wayland? Can you try on X11? Wayland support isn’t there yet.