I am using PDF-XChange Viewer Pro SDK (2.5.211(Updated on 22 Aug 2013)), to display a pdf file in clarion application. (Clarion v. 5.5). The pdf is displayed correctly for the most of the times, but sometimes, the table-border (dashed lines), gets displayed incorrectly, meaning that the border gets really thick. When I try printing the faulty pdf, it also prints table borders too thick (so it's not just a displaying problem).
We are using Windows XP.
If I open the same pdf file that was not displayed correctly in any other PDF-reader application, the file displays correctly, so it's not the pdf file issue.
I'm attaching images, that show the correct display of pdf file and how it's displayed when something goes wrong.
This is correct:

This is how the faulty display looks like:

Thank you, I am looking forward for your reply!