Unexpected Preflight failures following 25.03 update

[SallyM]

We've found that some customer supplied files that have previously passed preflight are now failing with the Error "Document needs repair on open". All are created by Acrobat Distiller 5.0.5 Windows. Has anyone else had this or similar problems?

[loicaigon]

Can you open those files smoothluy on Acrobat?

[SallyM]

Yes, they open fine and all pages display correctly.

[loicaigon]

Can you report to support for investigation?