I've been using my old extensions (CEP, under InDesign 2024 - 19.5 ; MacOS Sonoma) with Rosetta for a few months; suddenly the invisible extensions stop working, and the visible ones are black?
First thing to do is check the manifest.xml of the extension folder and check if your InDesign version is in the scope of the Hostlist: <HostName="IDSN"Version="[17.0,99.9]"/>