I think this problem is related to the fact that I have both 32-bit and 64-bit versions of CYGWIN installed on my Windows 7 PC. They are on the same disk but in different directories (/cygdrive/c/win32app/cygwin vs. /cygdrive/c/win64app/cygwin).
So far I have observed the problem only when I try to run the version of gnuplot that comes with the most recent 64-bit CYGWIN installation. I believe gnuplot v4.x.x.x had been working in 64-bit CYGWIN before I updated. I always run gnuplot from an X11 or rxvt console window within the CYGWIN environment. I'm using v4.4.4 with my 32 bit CYGWIN installation without any problems. I just updated my 64 bit CYGWIN installation in order to try out gnuplot v5.x.x. I didn't load absolutely everything, but I did accept all automatic dependencies. Installation went smoothly and all seems to work fine except for gnuplot. Observations: 1) When I type gnuplot into a 64-bit console window it returns immediately to my prompt with no visible message instead of entering interactive mode. In this case my PATH is /usr/local/bin:/usr/bin:/cygdrive/c/Windows/system32:/cygdrive/c/win32ap p/cygwin/bin 2) However, doing the above with /cygdrive/c/win32app/cygwin/bin removed from my PATH (or replaced by /cygdrive/c/win64app/cygwin/bin) produces this error message: C:/win64app/cygwin/bin/gnuplot.exe: error while loading shared libraries: ?: cannot open shared object file: No such file or directory So something in /cygdrive/c/win32app/cygwin/bin is making a difference. Hard for me to tell from the error message which shared library it is looking for. 3) I wouldn't necessarily expect it to work correctly if I try to start gnuplot.exe directly from the filename in Windows Explorer, but at least I get an error message -- "The application was unable to start correctly (0xc000007b). Any suggestions on how to fix or debug the problem would be appreciated. John Ottusch PS. I tried attaching the outputs from 'cygcheck -s -v -r' for cases 1 and 2 but that message apparently got bounced somewhere along the line. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple