Hello
I see the same problem in my project.
Check:
a. OVERLAYS name with special caracters. Ex.: "Button #223", "Botão 334", "Multistate @233".
b. OVERLAY ASSETS with special caracters in the file names. Images, videos, mp3, etc... Remove spaces and other special caracters.
Work's for me. The Indesign in brazilian portuguese use some special caracters in objects name.
Leo