Hi Joe,It is due to missing weather station data. I did look into it from my end and couldn't do anything more. I wish I could have figured out how I added stations in AS2004.5!!Edit: Also make sure you have a flight plan loaded and processed in AR.Hope this helps,JimActiveSky Sales and Supporthttp://www.hifisim.com/images/asv_dev_team.jpg http://www.hifisim.com/images/asv_proud_supporter.jpg

its really annoying, and it was said you guys would look into it.