I have tried on win 7 and 8. When editing an image and right clicking in an open area of the animations are the options greyed out for anyone else? Clicking on them still works and they actually turn black as they are being clicked on, but are all initially grey for me.
EDIT: Also when right clicking a current animation certain elements are black and others are greyed out (like rename) but you can actually still click the greyed out rename option and rename the animation.