HiFi have recently put out an update.. I'm not sure if you've had it.. B5570. If you get offered this.. don't take it
Another patch has come out.. B5575 which resolves issues caused by 5570. For me.. it was drastic.. it killed off my AICarriers 
Anyhoo.. ASN throws this crap at you with each install. It told me my Affinitymask wasn't configured correctly as well as all the other crud and warned that my system was likely to freeze if I didn't set it. Well.. I said yes to everything.. including all the things it asks after every update. Bang.. AICarriers had gone from FSX!! I've since installed the .NET version (I hate Java anyway) and then got update B5575 today which hasn't killed anything and had to update all the things it updated 2 days ago 
I've not had a chance to try any long flights since the last 2 updates but I'm glad it seems to have sorted your problem out
ATB
Dave
