Hi all, I installed the module (I'm at CentOS 6.6) by yum install luasql-postgres, ok. Then I used: lua myscript.lua /usr/bin/lua myscript.lua /usr/local/bin/lua myscript.lua I discovered that it is version dependent: lua (=/usr/local/bin/lua) does not operate, it is 5.3, whereas /usr/bin/lua works ok, it is 5.1. At the command line, it is not a problem to choose another lua interpreter than the default one is. But if I use the same lua script within the ConTeXt, I came across the same problem because the default version in ConTeXt is 5.2. First, I thought about the way how to change version of lua inside the current version of ConTeXt (is it possible?) but the same behaviour appeared when I tryed older versions (TL 2010, 2011, 2012) containing lua v5.1 by the default. It seems that file postgres.so which is the main important is not visible for ConTeXt. Neither package.path = '/usr/lib/lua/5.1/luasql;', not copying the postgres.so to the current directory did not help. I have any clue how to fix it. Have you any ideas? Thanks in advance, Tomáš %%%%%%%% ! LuaTeX error <main ctx instance>:3: module 'luasql.postgres' not found: no field package.preload['luasql.postgres'] no file './luasql/postgres.so' no file '/usr/local/lib/lua/5.1/luasql/postgres.so' no file '/usr/local/lib/lua/5.1/loadall.so' no file './luasql.so' no file '/usr/local/lib/lua/5.1/luasql.so' no file '/usr/local/lib/lua/5.1/loadall.so' stack traceback: [C]: in function 'require' <main ctx instance>:3: in main chunk. %%%%%%%%