SE Crashes if incorrect aircraft type is selected

SE crashed while trying to add helo's on TF ships in Battle Set HDS9. Problem occurred when an SH-60 Seahawk was attempted to be added to the USS Yorktown which is not on the list of Helo's that can be used on that type of ship.

Suggest that when an incorrect aircraft type is accidently selected that the Add button is disabled. Same should happen if a Ship has no air craft capability. Several ship classes have a 0 aircraft capacity, but a list of aircraft appear.

Example's:

US AO Cimarron Class
US LSD Whidbey Island Class
US LSD Class Anchorage Class
US LPD Raleigh Class
US DDG Arleigh Burke Class
US CG Leahy Class
US LCC Blue Ridge Class
US CGN Long Beach Class

If you have any questions please let me know.
Eric