This is not a note card issue, this is an issue with your installation and the the new extended charset font feature; there is a missing "ExtCharMedium" parameter in the fonts.xml file found by the viewer, like indicated in the log:
Make sure you remove any custom fonts.xml file from your "%AppData%\SecondLife\skins\default\xui\en-us\" directory, or re-write it taking the new skins\default\xui\en-us\fonts.xml file in the viewer installation directory as a base...