To get the new country codes to display in the drop down list you will need to download Sailwave v2-36-0 which is an executable only. This new version also fixes a bug when working with locales, see SUG thread Problem with languages in locale - #12 by Sailwave
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https://www.sailwave.com/download/sailwave/sailwave2-36-0/sailwave.exe
Once downloaded replace the Sailwave.exe in the folder C:\Program Files (x86)\Sailwave with the one downloaded.
Any problems let Jon know