The problem is with the tiff library. On https://github.com/LinuxCNC/linuxcnc/pull/1700 it is explained how to install an earlier version from snapshot.debian.org
To trigger the problem independently from linuxcnc, try $ wish % package require Img _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
