Dear Hans, Since I couldn’t use xits for math font, I tried to use euler. I found some mails about the euler font in the list, and change the type-imp-unfonts slightly. I replaced the lines containing xits with euler font. \loadtypescriptfile[euler] %\loadtypescriptfile[xits] … … \definetypeface [unfonts] [mm] [math] [pagellaovereuler][default] % \definetypeface [unfonts] [mm] [math] [xits] According to this typescript file, english uses texgyrepagella and korean uses unfonts. After that the sample file runs well without complaints. I am not sure it is the right way to use Euler font for math. Is it OK? or any other suggestions, like to use another font file? I tried ‘Neo Euler’ as mentioned in the list, but it doesn’t work in my system. Thank you. Best regards, Dalyoung