When exporting a Normalized PDF from ArtPro, the following message appears:
"Invalid objects found during Normalized PDF Output. Please choose another Flavour".
Answer
A Normalized PDF does not support embedded or linked .eps files, nor generic (non-Normalized) PDF files. When you change the file format, Export as Normalized PDF will be possible again.
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You may get the same error message in the log of the Automation Engine task Export ArtPro to Normalized PDF file if trying to process an ArtPro file with linked/embedded EPS or generic PDF files.