A person in the newsgroup comp.fonts posted a problem about an old font which could not be used in Windows XP.
Does the same happen with FCP, I wonder. I have no computer with Windows XP as the operating system and I do not know whether I have an old font which will not work in Windows XP in order to test this out.
Well, I have XP and I have old fonts (according to Erwin) and haven’t had problems of “not a valid font file”.
One could guess it’s a specific problem and not a generic one. It would be nice to ask for a copy to see what FCP does with it, or for that matter what someone else’s system (XP or not) does with it.
When in a font file the font subfamily name is not included XP refuses to install the font. Simply opening and saving the font in FC doesn’t solve the problem: you need to supply a name.
Both Windows 2000 (since SP4) and Windows XP refuse fonts with missing naming fields.
Your font probably lacks one or more required naming fields (or included them but didn’t give them a valid value). Read the help file for more information about this.