Dear Xara,
if I export to PDF/X-1a for print I got following font error in writen PDF:

Click image for larger version.  Name: screen_pdf_V15.jpg  Views: 131  Size: 41.7 KB  ID: 121459

Translation: The embedded font "IWUSEV+FrutigerLTStd-Bold" could not be removed. Some characters may not be displayed or printed correctly.

The same PDF-Export with XDP V12.8.1.50861 is korrekt without font embeding error.

Click image for larger version.  Name: screen_pdf_V12.jpg  Views: 99  Size: 42.2 KB  ID: 121460

Please fix it asap.