Data Merge: Data on a master page AND on a locked layer CRASHES when creating merged document
Best described by the original post on Reddit that was then confirmed by me: https://www.reddit.com/r/indesign/comments/7m8znp/psaattemptingtorundatamergewithdata/ Try it out with the demo provided.
Thanks for reporting the issue. The crash/protective shutdown is reproducible at our end.
Uwe Laubender commented
also ran into that issue. With InDesign 2020 version 220.127.116.115.
Fixing this bug may have been low priority, but please add a note of a possible crash to:
There should be a third prerequisite to be on the save side:
All elements on masters should be unlocked. All layers should be unlocked.
( ACP )