*.pac;*.paa;*.rtm;*.sqf;*.sqs;*.bikb;*.fsm;*.wss;* .ogg;*.wav;*.fxy;*.csv;*.html;*.lip;*.txt;*.bisurf;*.sqm;*.ext;*.dbf;*.prj;*.shx;*.shp When ever installing Addon builder this box is blank, you need to add these extensions for the builder to work. Copy and paste into below: Admin please sticky.