Thanks Scott - the surfacing aspect makes sense to me. I'm updating a model that came to me from a consulting firm as a dumb solid. Seems the company modeled in Pro-E (supposedly due to Pro-E's higher surfacing capabilities) then translated into SolidWorks. I'm trying to match surface contours to either remove material or add features. I've come across the geometric condition failure frequently and have usually found a way around it. It's simply becoming a nuisance. Thanks for the response - Dave.