I have installed ThorX6 and realized that the software users custom fonts. You can't use the ones you have in your Windows, because the ones used by Thor are designed especially for this program. The file format of the fonts is SLF. If you already have fonts in this format, then browse to C:\Program Files (x86)\ThorX6\font and paste them there. Open font.ini and define the custom fonts as show in the image. Save the file, restart the software and that's it.