If you're seeing this error message at your command prompt when attempting to initialize your vertical design drawing, then you should definitely review this page for a solution or workaround to get past this issue.
There is new information available re: this issue, specifically how to avoid it from happening altogether. Within the linked page see: "HORIZONTAL CHANGE PROTOCOL"
There is new information available re: this issue, specifically how to avoid it from happening altogether. Within the linked page see: "HORIZONTAL CHANGE PROTOCOL"