> C:\home\eda\mosekprj\docs\internal\conic>kpsewhich addtex.def > /home/eda/texfiles/addtex.def > What can be wrong? You need to follow the TDS rules for latex to find it. I guess if you had tried : kpsewhich -progname=latex addtex.def your files wouldn't have been found. Put your files in something texmf/tex/latex/... It will work. Fabrice