[Q]

President Shang I got your mail and I see several problems: sometimes the minimum and maximum size of the ship is not specified and in many designs there are several lines missing. Did you create this file completely new? Sometimes also the blank line between two different designs is missing. This will cause errors.
I recommend that you use an existing and tested design file and start to mod the numbers but don't delet or add any lines except maybe deleting misc. abilities that you don't need.

Hope this helps!