When I test my font some characters show up as rectangles
Then you must be using an older version of FontCreator, as the unregistered version of FontCreator 7 supports only a subset of characters:
A-Z, a-z, 0-9, !=?@-,./ and\
This is enough to preview the font, but not enough to produce a usable version.
FontCreator 9 allows you to test fonts during the trial period within the Font Test dialog, but the auto hinting option will only be applied with a registered copy.
The latest versions of FontCreator replace random characters with the High-Logic Logo during the trial period.
You can test your font within FontCreator by using the Preview Toolbar (shortcut F8). This now supports OpenType Features and kerning, which the Font Test window does not.
