C.T.D. whenever manning Flak Guns

I get a crash to the desktop any time I place a crewmen to man the flak guns. I uninstalled the game and reinstalled it and then installed RUb 1.44 and heavy traffic 1.45c and it is still happening. When I disable the mods using the JoneSoft mod enabler and just go back to the standard stock version patched up to 1.4b the problem goes away. There must be something wrong with one of the mods or perhaps a problem exist when running both of them together? The rest of the gameplay with the mods is excellent!