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Jennie, I was able to fix the nanosleep problem which was a 64 bit problem, so you should now be able to run gdcross and oother programs without the annoying error message scrolling on the screen. As for Garp, I copied over my linux executable, and verified it does work on your system, so that is now in the $GEMEXE directory so you can start making progress hopefully. I built garp on your system numerous ways for debugging, and isolated the crashing problem to the gmtime() call which returns NULL when the clock time is out of range- as a result of mouse cursor movement and the clock time in the status bar on the bottom of the gui. I can fix that- but something about the class clock mode that COMET created seems to step on the system clock calls. I've not yet determined if there is a basic problem, or a peculiarity about your environment. Steve Chiswell Unidata User Support Ticket Details =================== Ticket ID: WSK-433263 Department: Support GEMPAK Priority: Normal Status: Closed