I just make sure all layouts are closed, then right-click an object in the hierarchy (project window, not object window) and choose "Edit Animation".
Error message says:
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Construct 2
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Please open a layout before editing an object's texture.
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OK
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Afterwards half the image editor opens and when I close it C2 crashes.
It's happened in every .capx in every C2 build for as long as I can remember. Just never got around to reporting it.