go here and download the Federation. DO NOT over write the AI files just copy over the missing images.
www.galileo.spaceports.com/~william/main.htm
Missing image files happens in updates. If you do not have the full mod, and just apply the update more than likely you will get a few missing images.
I suggest that you check all of your race folders as I know a few in the update DO NOT have images in them. (They did not change from the full mod so they were not included in the mod update.)
Also if all you did was download the update, chances are your going to get a lot more errors over missing planets, components, and facilities.
I strongly suggest you download the full mod then apply the update, or download the image mod and install those images into your BASE SEIV pictures folder as directed.
This way any mod that requires these images will have access to them.
The AST mod full Version already has these files, although they are considerably out dated so you will still want to have the latest Version of the image mod and such installed.