I own all the Overland-Japanese Airports and they are among my very favorites. I experience none of the problems the previous reviewer mentions. It sounds as though he may have duplicate AFCAD files that are causing his problems.
I rate all the Japanese Airports 5 stars based on frame rate performance, aesthetics, accuracy, and AES compatibility. Further I have only needed customer support one time and found it outstanding. These airports are a great value for the money.
I would encourage the previous reviewer to search for duplicate AFCADs or to make sure the Overland provided AFCAD files are properly activated.
I just wanted to say that i'm not impressed at Overland's Japanese Airports. I have so much trouble with the ai traffic taxing in the grass and parking sideways against the buildings and also in the buildings. I've tried everything to fix the problem butwith no avail. I bought Japanese Airports 5,7 and 8 and have had trouble with this issue. I don't recommend this I'll stick with Overland European airports.