I'm having trouble with some ttf fonts not working in GDI+. I cannot seem to find any differences between some of the working and non working fonts. Some can be read and rendered without a problem. For some fonts GDI+ just reports the file as missing (which it is not). Something must be wrong with the format but I cannot for the life of me find out what it is... any pointers?
Microsoft has a decent tool called the Microsoft Font Validator which is a free download.