Does the file still open if you try? I think this might be a third-party plugin of some sort -- I don't see it in CS5.5, CS6 or CC.
The File still opens, but making later a pdf is difficult. Thanks for the answer. May be I can try to find the plugin anywhere.
1 person found this helpful
Try exporting the file to .idml, then save that as a new .indd. It should stripthe plugin info from the file unless the plugin was used. See Remove minor corruption by exporting
Thank You very much Peter,
Your answer (exporting to .idml) was very helpfull.
No problems anymore.