PDF export XMP annotated PDF gives error message

[ghost]

JabRef version

5.9 (latest release)

Operating system

Windows

Details on version and operating system

Windows 10 22H2

Checked with the latest development build

• I made a backup of my libraries before testing the latest development version.
• I have tested the latest development version and the problem persists

Steps to reproduce the behaviour

1. File -> Export all entries
2. XMP annotated PDF
3. When you save the file, the following error message is appearing. No PDF file is exported

See screenshot

Appendix

...

Log File

Paste an excerpt of your log file here

[ThiloteE]

can reproduce with JabRef 5.9

The workaround would be to export the files as library file, instead of a pdf file. So that would be for example .ris or .bib.
Funny enough, even though JabRef is .bib native, it is not listed there, so .ris would be the way to go for now. But I guess, your library is .bib anyway, so if you wanted to go for .bib, just save your library. No need to export.

[Siedlerchr]

Don't you need an existing file for this?
Edit// JabRef stores the metadata in an existing pdf file. So you need to select an existing PDF file, then JabRef will write all entries to that in the metadata. JabRef does not create a new pdf. I think this is a bit misleading hiere

https://docs.jabref.org/advanced/xmp

[ghost]

Why is jabref not creating a NEW pdf file?
What sense does it make to use an existing PDF file??

[ThiloteE]

I would suggest to implement one of the two:

• create a pdf file and write XMP metadata to it
• inform the user in a nice looking message (instead of the ugly error message) that for XMP annotation to work it is required to select an existing pdf file.

[ghost]

I think the first one would be understood well by most users.

[koppor]

Related: https://github.com/koppor/jabref/issues/337

[koppor]

Implementation guidance:

• Create empty PDF using Apache PDF Box

• Write text

  This PDF was created by JabRef. It demonstrates the embedding of BibTeX data in PDF files. Please open the file attachments view of your PDF viewer to see the attached files. Note that the normal usage is to embed the BibTeX data in an existing PDF.

• Embed PDFs