OK. I've purchased Spriter now.
Now I'm certain Ashley should make feature for C3. There's little use in Spriter without it.
I can see how spritesheet method can be better for simple characters on middleground & all background staff, but it can't do for more serious work.
Also Spritesheet method somewhy refuses to work both on C3/C2. I've done everything using your instructions with different models (Grey Player & Wonky Skeleton) and still nothing.
Using latest stable Spriter and C2 / C3, latest version of plugin for both.