If I recall correctly part of the crashing problem with Agtek has to do with your visual graphics for your monitor. You may need to upgrade your video card. We upgraded ours and have had much less crashing incidences (I can't recall the specific requirements, but Agtek support should be able to...
Interesting to see so many other earthworks consultants out there. It sometimes seems we are few and far between. It is definately a good service to provide, and I'd suggest also looking at working with more than just grading/paving contractors. For the most part, though the above posts have it...
