I've had Draftsight for the past year, and had no issues until last week. The program kept asking for a user key, and when I'd enter my information, it would immediately crash. I tried uninstalling and re-installing the software, but now I'm getting requests to insert a CD??? I have no CD. How do I get rid of this issue? I have the professional version, but I can't even get to the license key registration step. PLEASE HELP!