Missing Textures in Carribean scenery?

Hi all.I downloaded Jimmy Martin's awesome Caribbean scenery. The scenery really enhances my Carribean flights.However, I am noticing some object do not have textures, they are just white shapes. This is particularly noticeable in the Caribbean ships scenery and in some of the additional island airport buildings (such as MYNN). I have all the Nova textures installed and have followed his install instructions to the letter. Has anyone else had this problem? Thanks.Doug