Karelia updated Sandvox to version 2.7.5 over the weekend, but then quickly issued version 2.7.6 in order to fix a bug that rendered the Web authoring tool unusable for some users. The Sandvox 2.7.6 update improves stability while publishing or handling missing media and addresses an issue when choosing a banner or favicon image. It also collects all improvements and bug fixes released in version 2.7.5, including an issue where saving a new document to a location other than your start-up disk could result in data loss; direct publishing of a .ico favicon file without any adjustment by Sandvox; improved stability working with external media; improved responsiveness working with documents stored on a network-attached storage (NAS) drive; and improved validity of Sandvox-generated RSS feeds, especially those containing enclosures such as podcasts. As of this writing, the Mac App Store version is still stuck at 2.7.4. ($79.99 new, free update, 31.2 MB)
Is it a Unicode Font?
To determine if your font is Unicode-compliant, with all its characters coded and mapped correctly, choose the Font in any program (or in Font Book, set the preview area to Custom (Preview > Custom), and type Option-Shift-2.
If you get a euro character (a sort of uppercase C with two horizontal lines through its midsection), it's 99.9 percent certain the font is Unicode-compliant. If you get a graphic character that's gray rounded-rectangle frame with a euro character inside it, the font is definitely not Unicode-compliant. (The fact that the image has a euro sign in it is only coincidental: it's the image used for any missing currency sign.)
This assumes that you're using U.S. input keyboard, which is a little ironic when the euro symbol is the test. With the British keyboard, for instance, Option-2 produces the euro symbol if it's part of the font.