ProMash hasn't been updated in many years... I believe that it has died (or at least is slowly dying). At some point it won't even run on most OS's...
I switched to BeerSmith a couple years ago - it wasn't easy but I like how vibrant the development and community has been (new grain definitions, recipes, etc...). I've already pre-ordered the 2.0 coming out on Friday and can't wait to get the improvements.