Hello,   typically a product control panel works by renaming files from .bgl to.bgl.off. It does not work if both versions of the file are present or if neither version is.   The easy way is to completely remove both the Gold Coast and the airport and install them again.   The slightly more difficult way is to open ORBX\Scripts\orbx_cpl_YBCG.xml and go through the list of files for each mode. Wherever you see a duplicate, delete the .bgl.off vers