This looks like it is now resolved. Linux 64 bit exe's are here <http://www.argyllcms.com/disptools_lx_64.tgz> for those interested, and the Beta test source code is here <http://www.argyllcms.com/Argyll_dev_src.zip> as per usual. Official support will be with V1.6 when that happens. Graeme Gill.