Why can't AI2023 open the PDF files exported from Packmage?

[生29726306ils8]

Hello, I have been using Packmage CAD to generate PDF vector graphics and have always been able to open and edit them in AI, even in Illustrator v26.5.3. However, the latest version of Illustrator 2023 is giving me an error. Could you please help me fix it or make it compatible with the old version of PDF?

[Test Screen Name]

Illustrator is not a general PDF editor, so it will often fail. This is not a fault. Your workflow does not have solid foundations. You can, however, install the previous version of Illustrator and keep using it until it breaks.

[生29726306ils8]

I know, but the PDF file only contains vector information including the layer information from the AI file. It opens fine in older versions, so I hope the new version will fix the bug.

[Test Screen Name]

If you feel this is a bug, be sure to report it. (A post in the forums is NOT a bug report. https://www.adobe.com/products/wishform.html)

[生29726306ils8]

Thank you, this is exactly what I needed!

[Ton Frederiks]

Or Illustrator Uservoice:

https://illustrator.uservoice.com/

Edit: I see now that the wishform also leads to the Uservoice page...

[生29726306ils8]

Thank you, this is exactly what I needed!!