So they sent you a message explaining the problem and advising it will be resolved when they can do the fix. What more do you want at the moment. You will get your AE miles and they will be credited within the year travel occured so go towards your status. If this is still not resolved by December, and you are a few hundred miles short of qualifying for elite status, then you can get upset or worried, but in that case just call AE, explain the situation and you will not be penalized.

This is not just AC's IT guys it is a STAR system breakdown that must be resolved among the more than dozen airlines that are part of STAR.

Can you let us in on how many miles this missing credit represented?