I keep getting failed pdf exports using InDesign 2015. I tracked the problem down to several images whose effective PPI is greater than 600dpi.
If those images are hidden, the export works fine. If they're visible, it fails.
I don't have any problem exporting the exact same file, with the exact same images at the exact same effective PPI from InDesign 2014 (I just re-installed it and tested).
RAM isn't a problem - I have 32GB and I'm nowhere near maxing it out.
It's evidently an issue with the new version, so I'm going to go back to using InDesign 2014 until this issue is fixed, but thought it was best to call attention to it here.
Thanks for reporting the issue. I tried with a 1200 PPI png image and it exported fine. Can you share the images that fail to export to email@example.com. It would be great if you can share your document package along with the required linked files so that we can repro the issue.
Having the exact same problem. PDF failed to import when trying to choose a specific page via import options.