My Edge Animate files which were upgraded for the new 2014.1 version consistently have a bug where keyframes are not able to be deleted. Existing keyframes can be moved, properties can be readjusted, and new keyframes can be created. But if I try to delete a keyframe, either nothing happens or I receive an error message and that I should save and restart Edge Animate.
Noticing this on multiple machines, seems like a consistent issue, hope a fix is underway.