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Thomas, GEMPAK is not currently supported under cygwin. It will however run if you have the latest cygwin release with message queue funtionality that replaces the old cygipcs2 package add on. To use the message queue functionality on cygwin, you must run the /usr/bin/cygserver-config configuration tool that cygwin supplies. The 'bad system call' is described in several google hits on "cygwin ipcs". The error you have is that the system is not configured to launch the message queue support, so you can run programs like gdinfo which don't use the gplt process to do coordinate transformations, but the plotting programs can't launch gplt which is your error. See the Cygserver documentation under: http://www.cygwin.com/cygwin-ug-net/using-cygserver.html In particular, you need to run the cygserver-config script and set your variable set CYGWIN=server. Unfortunately, lestiff which is currently available as a cygwin package is not completely compatible for the Motif needed by the GUI programs, so they will not work. Steve Chiswell Unidata User Support >From: "Thomas Milewski" <address@hidden> >Organization: UCAR/Unidata >Keywords: 200510181517.j9IFHDHb006278 >--=_3a57d9bcde01db613a751fcb12e77751 >Content-Type: text/plain; charset="ISO-8859-1" >Content-Transfer-Encoding: 7bit > >Institution: McGill University >Package Version: GEMAK5.8.3a >Operating System: WINDOWS XP Professional + Cygwin >Hardware Information: 3.2GHz ; 1.0 Gb RAM >Inquiry: I went through the procedure to install Gempak, however only a few pr > ograms work, for example gdinfo. When I try to run gdcntr or gdwind, cygwin r > eturns the message: 'bad system call'. >I attached the make.out and install.out files to give you an idea. >Thanks in advance, >Thomas Milewski > > > -- NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.