Not really sure what is happening there, SpencerH, You can't have 'one star too many', I've created test admirals with all possible ancilliaries and built them up to Naval Command 5, the highest you can earn, and they were fine, showing Command 10 even though technically they had Command 12 with all their bonuses.

That you still get a CTD even after removing the fix points elsewhere. Any chance of you being able to post the savefile somewhere it can be downloaded?