Okay, I've nixed TibEd, tried DVMC, and that crashed as well. I tried editing the rules.txt file manually with Notepad and I STILL get a crash in the mission where you're going to destroy the Harkonnen main base. All I'm doing is changing the cost and time of the building, personnel, and vehicles. Does anyone know FOR SURE if this causes a crash in this level or any level. Any information would be appreciated.