You are all on the same build of archicad?
Do any of the other PCs have this problem?
Did you relink the pdf from your file to the source?
Try posting one of the pdfs here?
Erika
Architect, Consultant
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
AC5-18
Onuma System
"Implementing Successful Building Information Modeling"