Thanks for the replies! Yeah i don't know, i'm stumped. I spent 3hrs last night trying to figure it out. I've googled, with no luck. Like i said, if i open up an example schematic from the "example folder" and run them in the 3D viewer, they show up. But when i design my own, it throws up the error..and crashes the program. I'm taking an electronics course, and this program would help out ALOT in my learning. So i would love to have it running smoothly. If there's any other information i can give you, let me know! thanks