Hi Nate,

Thank you very much for the build; it works great and I can use Spine again. I really appreciate your help on all of this.

I think you guys have a great sweet spot going with the Spine approach to animation and keyframes. Animating feels like After Effects with skeletons and a pleasant Blender-ey UI. Flash + Scaleform can be extremely clunky and prone to breakage for GUI development due to the disjointed tools... I'm looking forward to exploring Spine's utility for GUI construction once the Event timeline bit is in. I think with the right options there, it would be straightforward to implement a lot of nice features in a game's GUI engine.
If events are allowed arbitrary text/data tags for example, I could even see users doing things like embedding strings that are read as scripts by interpreted languages at runtime. That would allow UI authors to put in a bit of functionality right from Spine if they were to drive the UI with Lua for example. As a user I'd find the concept of user-definable and distinguishable event 'types' to be very useful (perhaps each type gets its own timeline row/selectable color, along with default parameters)

Anyhow, best of luck and thanks again!
Cheers,
Tony