The information in this article applies to:
I received a plan from another Chief Architect user, but when I try to open it, this message appears: "Error: Unable to read the file. This file contains no data." What does this mean?
This message appears when you try to open a Chief Architect file, but the file does not have any information saved in it that the program can read.
The most common reason why a plan or layout file might have no data saved in it is that it was attached to an e-mail, compressed in a zip file, or uploaded to the Internet while your Chief Architect program was running. To resolve the issue, a new copy of the file must be obtained.
In any case, Chief Architect must be completely closed down (not simply minimized) before the file is attached, compressed, or uploaded.