GEMPAK works well, and quite stably for extended periods of time; but
Mike is correct, it is best to compile from source, as is true with most
systems. However, GEMPAK is not for the faint of heart, but if you love
her, she will work with you, without fail or nary an issue
If you wish to use GEMPAK for specific needs in a production
environment, such as deep meteorological analysis or climatological
analysis, or for other stable specific needs, I will help walk you
through the steps of a stable build since I've been using her from the
beginning. One of the many great things about GEMPAK is that once she is
built properly, she runs like a Pronghorn Antelope along the steppes of
the Continental Divide, and one only need update a table or two for the
occasional adaptation that is necessary.
Best of luck!