On 03/12/14 20:13, Lee wrote: > However, based on the output of strace, I tried deleting > `~/.local/share/ArgyllCMS`. dispcal then worked! This directory > contained a whole lot of *.ccmx files. Specifically, it also contained a > file that I had creating using instructions here . I tried removing > only this file, and dispcal worked again. The contents of that file are > here . > > Thanks for your help. Cheers, > Lee. > >  > https://groups.google.com/forum/#!msg/colorhug-users/--Ou22vj0DE/l795dXEqjd0J >  http://pastebin.com/5FwQdsw2 > Ah, it seems that there is an error in the *.ccmx file that I uploaded. I followed the instructions in  above, but I can see now that they are erroneous. It says to add the following lines to the *.ccmx file. > KEYWORD "TYPE_LCD" > TYPE_LCD "YES" However, rather than adding it at the end, one should add it between `COLOR_REP "XYZ"` and `NUMBER_OF_FIELDS`. When I fixed this file, dispcal now works as expected. Having said this, it'd be more useful if dispcal provided more informative error messages? Thanks again for all the help. Cheers, Lee.