Hi captin, please let me know the answers to these questions:

1) Did you copy the Extreme 330 folder into the "Aircraft" folder as mentioned above? C:\Program Files\IPACS\AeroFly Professional Deluxe\aircraft

2) Did you install AFPD add-on 1 or 2 (starflight)? These are not necessary to run the downloaded model, but model configuration issues may arise, which can be resolved by a simple file edit

Let me know