During the PDF export, the program cannot use the font that you selected in the Program options (Tools menu). The export is carried out anyway using the Arial or Helvetica fonts.
Cause
- the font does not contain all the information necessary to be used in a PDf file.
Solutions
- Select another Font under Program Options;
- Under Program Options turn off the option 'Advanced - PDF - Enable TrueType Fonts';
- Ignore warnings if the printout is ok.