Product: Xara Designer Pro X 12.8.1.50861 .
I am leaning more towards it being a problem as to the way Xara exports to pdf, as since then I tried importing the original pdf into InDesign, and made
some changes to the text and saved back to pdf and the file printed normally, i.e., as it looked on the monitor. If I am right it does'nt explain why the file from Xara printed out ok on some printers but not on others. Surely if the pdf was bad, it would show bad on the monitor and ALL printers?