Hi Denis,
Happily there are very few errata for Mindjammer - if you have the second printing then the few we're aware of have been fixed. Otherwise you can check out the G+ group
here.
The "*" in the "4dF*" on table 18-3 p316 is indeed a typo. You definitely still roll 4dF though, and not 8dF (there's never any instance in Mindjammer where you'd roll 8dF on a table). The -8 to +8 range of results is to handle modifications from other tables.
Many thanks for your support - the Commonality salutes you!
All the best,
Sarah