Hi, folks, My workstation complained about syntax errors in gcc-4.2.1's stdarg.h when they workstation was building SWI-Prolog version 5.6.40. Should I install an earlier version of gcc to solve the problem? Since I'm only a beginner in C, I don't dare revise the header file. Thanks. Bill ________________________________________________________________ Please visit a saintly hero: http://www.jakemoore.org And a boy with a wonderful wish: http://shaneswish.com/