rendering transparancy glitch

Hi all,

Doing a map comp and for some reason im getting transparancy glitches when doing camera moves, ,layers seem to be obsquering other layers when they shouldnt, all layers are out of a .ai file

Anyone have this problem and possibly how I might go about fixing it?

here is the video,

Co-Director Podchains Ltd
Video Producer / Motion graphics designer http://bexmedia.net