Windows 7: Chinese characters replacing quotes & apostrophes in English text

[FORD JR., CURT]

A module which has been problem-free on most computers is showing odd behavior on one client's computer: Chinese characters appear replacing an apostrophe + s, or a contraction with an apostrophe, in the English text, and also where there are opening & closing quotes. m-dashes also aren't displaying properly.

The text was pasted into Livecode from an rtf document and is displayed in the Charis SIL font, which our installer installs (other parts of the text make clear the font is installing normally). It's not editable or even selectable, and the module doesn't involve any htmltext or unicodetext routines.

One thing different on this system may be that the user is running Windows 7 Ultimate English version, with Chinese language support.

Any ideas on what's happening, or how to fix it?

thanks,

Curt