it looks like kpathsea can't handle upcase filename correctly under win32: D:\>kpsewhich ruby.sty y:/texmf-dist/tex/latex/CJK/ruby.sty D:\>kpsewhich CJK.sty D:\>kpsewhich hfossbxitT1.cpa D:\>kpsewhich t1hfott.fd y:/texmf-dist/tex/latex/hfoldsty/t1hfott.fd D:\>