I strongly advise all Adacalc users update it to v2.90 due to some broken functions (especially METAR/TAF retrieval). See here www.nws.noaa.gov/om/notification/scn16-16wngccb.htm Some other improvements and new functions have also been included. Revision history is available here www.aero.sors.fr/releasenotes/adacalc_revision_history.txt Update can be performed within the program as usual (click on version label, then update or Options and default then Adacalc information and update)