Hello David Grajal, find the ldd output of ldd inside a up-to-date buster amd64 VM below.
So either your /usr/bin/PosteRazor does not match the current debian packaged binary, or it loads some shared object which has this dependency. At least the version in Debian posterazor 1.5.1-2+b1 got built against libopenexr22 2.2.0-11+b1 which just built a libIlmImf-2_2.so.22.0.0. Kind regards, Bernhard root@debian:~# ldd /usr/bin/PosteRazor linux-vdso.so.1 (0x00007ffec0e92000) libfltk.so.1.1 => /lib/x86_64-linux-gnu/libfltk.so.1.1 (0x00007f70fb296000) libfltk_images.so.1.1 => /lib/x86_64-linux-gnu/libfltk_images.so.1.1 (0x00007f70fb285000) libfreeimage.so.3 => /lib/x86_64-linux-gnu/libfreeimage.so.3 (0x00007f70fb1cd000) libX11.so.6 => /lib/x86_64-linux-gnu/libX11.so.6 (0x00007f70fb08c000) libXpm.so.4 => /lib/x86_64-linux-gnu/libXpm.so.4 (0x00007f70fae7a000) libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f70facf6000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f70fab71000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f70fab57000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f70fa996000) libXft.so.2 => /lib/x86_64-linux-gnu/libXft.so.2 (0x00007f70fa780000) libfontconfig.so.1 => /lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007f70fa73a000) libXinerama.so.1 => /lib/x86_64-linux-gnu/libXinerama.so.1 (0x00007f70fa735000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f70fa72e000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f70fa70d000) libpng16.so.16 => /lib/x86_64-linux-gnu/libpng16.so.16 (0x00007f70fa6d4000) libjpeg.so.62 => /lib/x86_64-linux-gnu/libjpeg.so.62 (0x00007f70fa46b000) libjxrglue.so.0 => /lib/x86_64-linux-gnu/libjxrglue.so.0 (0x00007f70fa249000) libopenjp2.so.7 => /lib/x86_64-linux-gnu/libopenjp2.so.7 (0x00007f70fa1f2000) libraw.so.19 => /lib/x86_64-linux-gnu/libraw.so.19 (0x00007f70fa10e000) libtiff.so.5 => /lib/x86_64-linux-gnu/libtiff.so.5 (0x00007f70fa08d000) libwebpmux.so.3 => /lib/x86_64-linux-gnu/libwebpmux.so.3 (0x00007f70f9e83000) libwebp.so.6 => /lib/x86_64-linux-gnu/libwebp.so.6 (0x00007f70f9c1a000) libIlmImf-2_2.so.23 => /lib/x86_64-linux-gnu/libIlmImf-2_2.so.23 (0x00007f70f9941000) libHalf.so.23 => /lib/x86_64-linux-gnu/libHalf.so.23 (0x00007f70f96fe000) libIex-2_2.so.23 => /lib/x86_64-linux-gnu/libIex-2_2.so.23 (0x00007f70f94dc000) libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f70f92be000) libxcb.so.1 => /lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f70f9294000) /lib64/ld-linux-x86-64.so.2 (0x00007f70fb5c2000) libfreetype.so.6 => /lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f70f91d8000) libXrender.so.1 => /lib/x86_64-linux-gnu/libXrender.so.1 (0x00007f70f8fce000) libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f70f8f8f000) libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007f70f8f86000) libXext.so.6 => /lib/x86_64-linux-gnu/libXext.so.6 (0x00007f70f8d74000) libjpegxr.so.0 => /lib/x86_64-linux-gnu/libjpegxr.so.0 (0x00007f70f8b3e000) liblcms2.so.2 => /lib/x86_64-linux-gnu/liblcms2.so.2 (0x00007f70f8ae1000) libgomp.so.1 => /lib/x86_64-linux-gnu/libgomp.so.1 (0x00007f70f8aae000) libzstd.so.1 => /lib/x86_64-linux-gnu/libzstd.so.1 (0x00007f70f8a0e000) liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f70f89e6000) libjbig.so.0 => /lib/x86_64-linux-gnu/libjbig.so.0 (0x00007f70f87d8000) libImath-2_2.so.23 => /lib/x86_64-linux-gnu/libImath-2_2.so.23 (0x00007f70f85c6000) libIlmThread-2_2.so.23 => /lib/x86_64-linux-gnu/libIlmThread-2_2.so.23 (0x00007f70f83bd000) libXau.so.6 => /lib/x86_64-linux-gnu/libXau.so.6 (0x00007f70f81b9000) libXdmcp.so.6 => /lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f70f7fb3000) libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f70f7f99000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f70f7f8f000) root@debian:~# dpkg -S libIlmImf-2_2.so.23 libopenexr23:amd64: /usr/lib/x86_64-linux-gnu/libIlmImf-2_2.so.23 libopenexr23:amd64: /usr/lib/x86_64-linux-gnu/libIlmImf-2_2.so.23.0.0 root@debian:~# dpkg -l | grep libopenexr ii libopenexr23:amd64 2.2.1-4.1 amd64 runtime files for the OpenEXR image library root@debian:~# md5sum /usr/bin/PosteRazor 7b1e2b6d466776add9a94fd230ac9df1 /usr/bin/PosteRazor https://buildd.debian.org/status/fetch.php?pkg=posterazor&arch=amd64&ver=1.5.1-2%2Bb1&stamp=1488894655&raw=0