@Carmelo_DrRaw a987c280aea2bbbf18c0917e550cc4c4 RawTherapee-dev-5.4-266-ga84ce624.AppImage ran without crashing, but it was very slow in some ways. Panning the main preview or adjusting a curve felt close to normal, but right-clicking on a different thumb in the File Browser takes 2 seconds to show the context menu, and switching from the Editor tab to the File Browser tab, and vice-versa, takes 10 seconds and makes my whole system jerky. No warnings nor errors appear in the console while this happens. Preferences also takes about 10 seconds to appear and over a second to close.
$ ./RawTherapee-dev-5.4-266-ga84ce624.AppImage
System stdc++ library: "/usr/lib/gcc/x86_64-pc-linux-gnu/6.4.0/libstdc++.so.6"
System stdc++ library version: "3.4.22"
Bundled stdc++ library version: "3.4.22"
Newest stdc++ library version: "3.4.22"
Using system stdc++ library
fcv: "1.10.1" fcv2: "1.9.2"
echo "1.10.1 1.9.2" | tr " " "\n" | sort -V | tail -n 1
Newest fontconfig library version: "1.10.1"
Using system fontconfig library
linux-vdso.so.1 (0x00007ffd56f91000)
libcanberra-gtk3.so.0 => /tmp/.mount_ZfVs38/usr/lib/libcanberra-gtk3.so.0 (0x00007fdd45a63000)
libX11.so.6 => /usr/lib/libX11.so.6 (0x00007fdd4570c000)
libcanberra.so.0 => /tmp/.mount_ZfVs38/usr/lib/libcanberra.so.0 (0x00007fdd454fc000)
libgtk-3.so.0 => /tmp/.mount_ZfVs38/usr/lib/libgtk-3.so.0 (0x00007fdd44bf0000)
libgdk-3.so.0 => /tmp/.mount_ZfVs38/usr/lib/libgdk-3.so.0 (0x00007fdd4492f000)
libatk-1.0.so.0 => /tmp/.mount_ZfVs38/usr/lib/libatk-1.0.so.0 (0x00007fdd44709000)
libgio-2.0.so.0 => /tmp/.mount_ZfVs38/usr/lib/libgio-2.0.so.0 (0x00007fdd44361000)
libpangocairo-1.0.so.0 => /tmp/.mount_ZfVs38/usr/lib/libpangocairo-1.0.so.0 (0x00007fdd44154000)
libgdk_pixbuf-2.0.so.0 => /tmp/.mount_ZfVs38/usr/lib/libgdk_pixbuf-2.0.so.0 (0x00007fdd43f31000)
libcairo-gobject.so.2 => /tmp/.mount_ZfVs38/usr/lib/libcairo-gobject.so.2 (0x00007fdd43d29000)
libpango-1.0.so.0 => /tmp/.mount_ZfVs38/usr/lib/libpango-1.0.so.0 (0x00007fdd43adc000)
libcairo.so.2 => /tmp/.mount_ZfVs38/usr/lib/libcairo.so.2 (0x00007fdd437ac000)
libgobject-2.0.so.0 => /tmp/.mount_ZfVs38/usr/lib/libgobject-2.0.so.0 (0x00007fdd43558000)
libglib-2.0.so.0 => /tmp/.mount_ZfVs38/usr/lib/libglib-2.0.so.0 (0x00007fdd43244000)
libexpat.so.1 => /usr/lib/libexpat.so.1 (0x00007fdd43015000)
libfftw3f.so.3 => /tmp/.mount_ZfVs38/usr/lib/libfftw3f.so.3 (0x00007fdd42c10000)
libfftw3f_omp.so.3 => /tmp/.mount_ZfVs38/usr/lib/libfftw3f_omp.so.3 (0x00007fdd42a0a000)
libgiomm-2.4.so.1 => /tmp/.mount_ZfVs38/usr/lib/libgiomm-2.4.so.1 (0x00007fdd4265d000)
libglibmm-2.4.so.1 => /tmp/.mount_ZfVs38/usr/lib/libglibmm-2.4.so.1 (0x00007fdd423e1000)
libsigc-2.0.so.0 => /tmp/.mount_ZfVs38/usr/lib/libsigc-2.0.so.0 (0x00007fdd421db000)
libgthread-2.0.so.0 => /tmp/.mount_ZfVs38/usr/lib/libgthread-2.0.so.0 (0x00007fdd41fda000)
libgtkmm-3.0.so.1 => /tmp/.mount_ZfVs38/usr/lib/libgtkmm-3.0.so.1 (0x00007fdd41868000)
libatkmm-1.6.so.1 => /tmp/.mount_ZfVs38/usr/lib/libatkmm-1.6.so.1 (0x00007fdd4161b000)
libgdkmm-3.0.so.1 => /tmp/.mount_ZfVs38/usr/lib/libgdkmm-3.0.so.1 (0x00007fdd413c9000)
libpangomm-1.4.so.1 => /tmp/.mount_ZfVs38/usr/lib/libpangomm-1.4.so.1 (0x00007fdd4119c000)
libcairomm-1.0.so.1 => /tmp/.mount_ZfVs38/usr/lib/libcairomm-1.0.so.1 (0x00007fdd40f75000)
libiptcdata.so.0 => /tmp/.mount_ZfVs38/usr/lib/libiptcdata.so.0 (0x00007fdd40d69000)
libjpeg.so.9 => /tmp/.mount_ZfVs38/usr/lib/libjpeg.so.9 (0x00007fdd40b2f000)
liblcms2.so.2 => /tmp/.mount_ZfVs38/usr/lib/liblcms2.so.2 (0x00007fdd408d6000)
libpng12.so.0 => /tmp/.mount_ZfVs38/usr/lib/libpng12.so.0 (0x00007fdd406b0000)
libz.so.1 => /lib64/libz.so.1 (0x00007fdd40497000)
libtiff.so.5 => /tmp/.mount_ZfVs38/usr/lib/libtiff.so.5 (0x00007fdd4022f000)
liblensfun.so.1 => /tmp/.mount_ZfVs38/usr/lib/liblensfun.so.1 (0x00007fdd40010000)
libstdc++.so.6 => /usr/lib/gcc/x86_64-pc-linux-gnu/6.4.0/libstdc++.so.6 (0x00007fdd3fbe0000)
libm.so.6 => /usr/lib/libm.so.6 (0x00007fdd3f8c7000)
libgomp.so.1 => /usr/lib/gcc/x86_64-pc-linux-gnu/6.4.0/libgomp.so.1 (0x00007fdd3f692000)
libgcc_s.so.1 => /usr/lib/gcc/x86_64-pc-linux-gnu/6.4.0/libgcc_s.so.1 (0x00007fdd3f47b000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fdd3f25a000)
libc.so.6 => /lib64/libc.so.6 (0x00007fdd3ee98000)
libvorbisfile.so.3 => ././/lib/libvorbisfile.so.3 (0x00007fdd3ec90000)
libvorbis.so.0 => ././/lib/libvorbis.so.0 (0x00007fdd3ea63000)
libogg.so.0 => ././/lib/libogg.so.0 (0x00007fdd3e85a000)
libltdl.so.7 => ././/lib/libltdl.so.7 (0x00007fdd3e650000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007fdd3e44c000)
libxcb.so.1 => /usr/lib/libxcb.so.1 (0x00007fdd3e21b000)
libgmodule-2.0.so.0 => ././/lib/libgmodule-2.0.so.0 (0x00007fdd3e018000)
libXi.so.6 => ././/lib/libXi.so.6 (0x00007fdd3de08000)
libXdamage.so.1 => ././/lib/libXdamage.so.1 (0x00007fdd3dc05000)
libXfixes.so.3 => ././/lib/libXfixes.so.3 (0x00007fdd3d9ff000)
libatk-bridge-2.0.so.0 => ././/lib/libatk-bridge-2.0.so.0 (0x00007fdd3d7d1000)
libepoxy.so.0 => ././/lib/libepoxy.so.0 (0x00007fdd3d4dc000)
libpangoft2-1.0.so.0 => ././/lib/libpangoft2-1.0.so.0 (0x00007fdd3d2c7000)
libfontconfig.so.1 => /usr/lib/libfontconfig.so.1 (0x00007fdd3d07b000)
libfreetype.so.6 => ././/lib/libfreetype.so.6 (0x00007fdd3cdda000)
libXext.so.6 => ././/lib/libXext.so.6 (0x00007fdd3cbc8000)
librt.so.1 => /lib64/librt.so.1 (0x00007fdd3c9bf000)
libresolv.so.2 => /lib64/libresolv.so.2 (0x00007fdd3c7a8000)
libpixman-1.so.0 => ././/lib/libpixman-1.so.0 (0x00007fdd3c500000)
libEGL.so.1 => /usr/lib/libEGL.so.1 (0x00007fdd3c2c1000)
libxcb-shm.so.0 => ././/lib/libxcb-shm.so.0 (0x00007fdd3c0be000)
libxcb-render.so.0 => ././/lib/libxcb-render.so.0 (0x00007fdd3beb5000)
libXrender.so.1 => ././/lib/libXrender.so.1 (0x00007fdd3bcab000)
libGL.so.1 => /usr/lib/libGL.so.1 (0x00007fdd3ba2d000)
libffi.so.6 => ././/lib/libffi.so.6 (0x00007fdd3b825000)
libpcre.so.3 => /tmp/.mount_ZfVs38/usr/lib/libpcre.so.3 (0x00007fdd3b5e7000)
liblzma.so.5 => /tmp/.mount_ZfVs38/usr/lib/liblzma.so.5 (0x00007fdd3b3c5000)
libjbig.so.0 => /tmp/.mount_ZfVs38/usr/lib/libjbig.so.0 (0x00007fdd3b1b7000)
/lib64/ld-linux-x86-64.so.2 (0x00007fdd45c67000)
libXau.so.6 => /tmp/.mount_ZfVs38/usr/lib/libXau.so.6 (0x00007fdd3afb3000)
libXdmcp.so.6 => /tmp/.mount_ZfVs38/usr/lib/libXdmcp.so.6 (0x00007fdd3adad000)
libatspi.so.0 => ././/lib/libatspi.so.0 (0x00007fdd3ab7d000)
libdbus-1.so.3 => ././/lib/libdbus-1.so.3 (0x00007fdd3a938000)
libharfbuzz.so.0 => ././/lib/libharfbuzz.so.0 (0x00007fdd3a697000)
libxcb-dri2.so.0 => ././/lib/libxcb-dri2.so.0 (0x00007fdd3a492000)
libX11-xcb.so.1 => ././/lib/libX11-xcb.so.1 (0x00007fdd3a290000)
libxcb-dri3.so.0 => ././/lib/libxcb-dri3.so.0 (0x00007fdd3a08d000)
libxcb-xfixes.so.0 => ././/lib/libxcb-xfixes.so.0 (0x00007fdd39e86000)
libxcb-present.so.0 => ././/lib/libxcb-present.so.0 (0x00007fdd39c83000)
libxcb-sync.so.1 => ././/lib/libxcb-sync.so.1 (0x00007fdd39a7d000)
libxshmfence.so.1 => ././/lib/libxshmfence.so.1 (0x00007fdd3987b000)
libwayland-client.so.0 => /usr/lib/libwayland-client.so.0 (0x00007fdd3966b000)
libgbm.so.1 => /usr/lib/libgbm.so.1 (0x00007fdd3945b000)
libwayland-server.so.0 => /usr/lib/libwayland-server.so.0 (0x00007fdd39245000)
libdrm.so.2 => /usr/lib/libdrm.so.2 (0x00007fdd39031000)
libglapi.so.0 => ././/lib/libglapi.so.0 (0x00007fdd38e0a000)
libxcb-glx.so.0 => ././/lib/libxcb-glx.so.0 (0x00007fdd38bf3000)
libXxf86vm.so.1 => ././/lib/libXxf86vm.so.1 (0x00007fdd389ed000)
libSM.so.6 => /usr/lib/libSM.so.6 (0x00007fdd387e4000)
libICE.so.6 => /usr/lib/libICE.so.6 (0x00007fdd385c6000)
libuuid.so.1 => /lib64/libuuid.so.1 (0x00007fdd383c1000)
libbsd.so.0 => /usr/lib/libbsd.so.0 (0x00007fdd381aa000)
Gtk-Message: 18:31:26.065: Failed to load module "canberra-gtk-module"
(rawtherapee:27830): Gtk-WARNING **: 18:31:26.171: Theme parsing error: gtk.css:68:35: The style property GtkButton:child-displacement-x is deprecated and shouldn't be used anymore. It will be removed in a future version
(rawtherapee:27830): Gtk-WARNING **: 18:31:26.171: Theme parsing error: gtk.css:69:35: The style property GtkButton:child-displacement-y is deprecated and shouldn't be used anymore. It will be removed in a future version
(rawtherapee:27830): Gtk-WARNING **: 18:31:26.171: Theme parsing error: gtk.css:70:34: The style property GtkCheckButton:indicator-size is deprecated and shouldn't be used anymore. It will be removed in a future version
(rawtherapee:27830): Gtk-WARNING **: 18:31:26.171: Theme parsing error: gtk.css:71:36: The style property GtkCheckMenuItem:indicator-size is deprecated and shouldn't be used anymore. It will be removed in a future version
(rawtherapee:27830): Gtk-WARNING **: 18:31:26.172: Theme parsing error: gtk.css:73:46: The style property GtkScrolledWindow:scrollbars-within-bevel is deprecated and shouldn't be used anymore. It will be removed in a future version
(rawtherapee:27830): Gtk-WARNING **: 18:31:26.172: Theme parsing error: gtk.css:76:30: The style property GtkExpander:expander-size is deprecated and shouldn't be used anymore. It will be removed in a future version
(rawtherapee:27830): Gtk-WARNING **: 18:31:26.181: Theme parsing error: gtk.css:83:29: The style property GtkStatusbar:shadow-type is deprecated and shouldn't be used anymore. It will be removed in a future version