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Christian, You probably either have a hung gplt process, killed a running program, or logged out without running gpend on a session. Use the /bin/ps commans to see if you have any running gplt processes and any other xw, gf or other gempak device drivers of programs running. If you find any runnig processes, use the unix kill command to terminate them. Then, look for any existing message queues that may be still open. Use the "ipcs" command. If any message queus are still open, use the "ipcrm -q queid" unix command to clean them up. The queue id is that shown with the ipcs command. After cleaning things up, you should be able to launch programs as before. If you want more information, see the tutorial section on system administration and gpend. Stave Chiswell Unidata User Support >From: Christian Page <address@hidden> >Organization: UCAR/Unidata >Keywords: 200010011550.e91FoYb13792 > >Hi, > >I have a serious problem. It hapenned without any apparent reason. It worked f > or >months, then now I have always this error when running GEMPAK : > >Error in message send = 22 >itype, ichan, nwords,1,-1,2 >Creating process: gplt for queue -1 >Error in message send = 22 >itype, ichan, nwords,1,-1,3 > [GEMPLT -1] NMBRER - Mailbox read. >Error in message send = 22 >itype, ichan, nwords,1,-1,2 > [GPEND -3] Fatal error initializing GEMPLT. > >What is wrong? > > >Christian Page finger address@hidden => tel. + adresse >address@hidden http://www.sca.uqam.ca/ > >Assistant de recherche / Research Assistant >Universite du Quebec a Montreal / Universite McGill / McGill Radar > >