Hi, I just try to use new version of argyll on debian sid with i1. The compilation goes well, but dispwin or dispcal segfault each time: alezan:/home/mike/Desktop/argyll/Argyll_V1.0.1/bin# gdb dispwin GNU gdb 6.8-debian Copyright (C) 2008 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu"... (gdb) run Starting program: /home/mike/Desktop/argyll/Argyll_V1.0.1/bin/dispwin [Thread debugging using libthread_db enabled] [New Thread 0x7fc1468626e0 (LWP 12656)] Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fc1468626e0 (LWP 12656)] 0x0000000000407007 in get_displays () (gdb) bt #0 0x0000000000407007 in get_displays () #1 0x0000000000407d06 in get_a_display () #2 0x00000000004090ec in main () (gdb) alezan:/home/mike/Desktop/argyll/Argyll_V1.0.1/bin# ldd dispwin linux-vdso.so.1 => (0x00007fff181fe000) libdl.so.2 => /lib/libdl.so.2 (0x00007f350fd52000) libX11.so.6 => /usr/lib/libX11.so.6 (0x00007f350fa46000) libXext.so.6 => /usr/lib/libXext.so.6 (0x00007f350f835000) libXxf86vm.so.1 => /usr/lib/libXxf86vm.so.1 (0x00007f350f630000) libXinerama.so.1 => /usr/lib/libXinerama.so.1 (0x00007f350f42e000) libXrandr.so.2 => /usr/lib/libXrandr.so.2 (0x00007f350f227000) libXau.so.6 => /usr/lib/libXau.so.6 (0x00007f350f025000) libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0x00007f350ee20000) libXss.so.1 => /usr/lib/libXss.so.1 (0x00007f350ec1d000) libm.so.6 => /lib/libm.so.6 (0x00007f350e99a000) libpthread.so.0 => /lib/libpthread.so.0 (0x00007f350e77e000) libc.so.6 => /lib/libc.so.6 (0x00007f350e42a000) /lib64/ld-linux-x86-64.so.2 (0x00007f350ff56000) libxcb-xlib.so.0 => /usr/lib/libxcb-xlib.so.0 (0x00007f350e229000) libxcb.so.1 => /usr/lib/libxcb.so.1 (0x00007f350e00d000) libXrender.so.1 => /usr/lib/libXrender.so.1 (0x00007f350de04000) It's an amd64 computer with x86_64 debian kernel 2.6.25 and compiled with gcc-4.1 I also try the 64 bits binary on the site, with exactly same behavior. Any help? Thanks Mike