Hello,
I tried again after replacing the files you attached, but got the following error:
Unable to use the chosen font (FT_New_Face).
UnityEngine.Debug:LogError(Object)
FreeType:GetFaces(Font) (at Assets/NGUI/Scripts/Editor/FreeType.cs:435)
UIFontMaker:OnGUI() (at Assets/NGUI/Scripts/Editor/UIFontMaker.cs:217)
UnityEditor.DockArea:OnGUI()
I tried it with different fonts, including the one I showed you in an earlier message (open sans).
Thanks