The original edition of Book 6 Scouts has some errata related to its section on planet building. The Books 0-8 from FFE has the corrected info incorporated into the version of Book 6 printed there. Also, if it's of any import to you, the minitures rules, Striker, had a small errata sheet associated with it as well. I'm not aware of the URLs for any sites carrying these data but do know that print JTAS provided them. (So they can be found in the appropriate FFE JTAS reprint). My suggestion is do a web search based on the titles of the above works and the word 'errata'.