I used autokey, then tried to manually keyframe the loc of my camera (which happens to be using a track to constraint - tried deleting it too), and I get this error.
Alpha1 and SVN versions, win64.
I understand it’s aligorith’s commit, so he can probably help me the best.
I tried closing Blender and re-opening it.
I can’t replicate it in a new file with a basic cube or camera anim.
adding an object or trying to key an existing object without keys also gives no error.