I just re-installed (totally removed the old cygwin+registry settings) and installed the very latest cygwin release. I get a pop-up window when I try to run the non-GUI (terminal) program on my XP pro PC, 586. Pop up display: The procedure entry point _fopen64 could not be found in the dynamic link library cygwin1.dll The program I am compiling with cygwin used to work with an older version of cygwin, the program has not changed and I am not using fopen64. I have tried to search the web and the cygwin archive, but found nothing appropriate. Thanks, Wilfred Nilsen -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/