A gap between floors is usually caused by modifying the Platform to this Line option in your Wall Type Definitions dialog so that it is on the exterior surface.
3D Camera views may not generate properly if you have an outdated video driver or an unsupported video card.
Follow the steps within this article to troubleshoot Exception Error Messages that you may be recieving.
If the registration wizard fails to locate the hardware lock these messages may appear.
Printing issues can be resolved by specifying a default printer, using the Clear Printer info tool, or creating pdf and then printing the pdf.
The most common reason for Chief Architect to run slowly is working in an unsupported fashion, such as over a network server location, or external device.