Boy, am I disgusted! Twice now, I have worked for two days on a project, many times saving by clicking the save icon, and then all of a sudden, I can no longer save the model file and I lose all my work. I have uninstalled then reinstalled SE 50 with the license provided by Ricky. Everything seems fine until I get a couple days invested and then Poof! All my work is gone! SXXT! I cannot continue using SE until this problem is resolved for SURE! I'd hate to have to go back to DesignCad!