Check that all files got copied to the proper location. For airport elevation: Check that FS9/scenery/world/scenery has the files AF2_TNCM_flytampa_dummy.BGL AF2_TFFJ_flytampa_dummy.BGL AF2_SABA_flytampa_dummy.BGL If this is missing, run the installation program again. This is strange. I have two s...