Strange font related bug on Nokia E61

I haven't looked at this bug very far, but when I load Gulim font (a Chinese font without latin glyphs, I converted it from a free font on the Internet), the messaging application does not display anything when I open a message (the list is fine). After I tested pasting Chinese bible text from S60Bible, I noticed that the messaging application is using the gulim font (so I can see the Chinese txt).

I am loading the font using this code:

for (TInt i = 0; i < entries->Count(); ++i)
{
Int id = 0;
tmpFontPath.Copy(KFontDir);
tmpFontPath.Append((*entries)[i].iName);
CEikonEnv::Static()->screendevice ()->AddFile(tmpFontPath, id);
}


Can it be because of the ID (I am just starting from 0). If I can change a font for other application, can I change the system font?

I will try to solve this later at home.

Update: This is the problem:

http://www3.symbian.com/faq.nsf/0/BA5F628A350FBFEB80257336001D0C68?OpenDocument