We have encountered a similar problem with a print shop that cannot print our PDFs created by AC11 (they also say they "crash their machines"). They've had no problems in the past printing PDFs created by AC10. One suggestion was to create TIFFs from the PDFs, but that is undesirable (as per the original post).
One noticeable difference is the "PDF Producer" listed within the Properties dialog of each PDF: AC10 has "ArchiCAD", while AC11 has "PDFTron PDFNet".
We do have Acrobat Professional, and are now
printing to
Adobe PDF instead of
saving as
a PDF. We can then create a single PDF from the multiple PDFs. Ideally, we'd like to continue to use ACs PDF creator, Merge Layouts into a single PDF, and avoid the extra step(s), so if anyone can shed any additional light on the issue...
MacBook Pro Apple M2 Max, 96 GB of RAM
AC27 US (5003) on Mac OS Ventura 13.6.2
Started on AC4.0 in 91/92/93; full-time user since AC8.1 in 2004