when trying to insert a keyframe (press I) for a camera, I only get the menu title “Insert keyframe menu”, but cannot select something like “location”, “rotation” etc. This problem applies to all of my cameras, and for various (older as well) versions of my projects - but not to a new file from scratch, and not to any other objects.
At several places in the web you find the answer “delete keyrings in the timeline”. But that seems not to work for me.
This is how it looks:
What can I do?