Dear Thomas, Mojca, and Otared, Thank you for the instructions. I think that I followed the instructions of installation without problems. But I have a problem running luatools. A few week ago, I succeeded running luatools --generate, but not luatools --ini --... after making .luatex containg variables like TEXMF, TEXMFCNF, etc. I removed gwTeX and reinstalled MacTeX, I did the same steps of installation and I got the errors. At this time, even "luatools -- generate" didn't run correctly. It is ooking for the wrong folder. I tried "setuptex"(copy setuptex to the binary, and chmod 755 to run), but it asked me to "provide a proper tex directory like / something/tex" It seems to me that luatools are not able to get the texlive home dirextory. I may try once more using another mac because sometime it behaved differently. Thank you for your concern. Best regards, Dalyoung