There are several issues with integration of Skeleton files from Spriter Pro. Not least of which is that AppGameKit only supports files that contain a single animation. That's annoying but can be worked around.
What can't be worked around is the random scaling of sprite parts.
The attached images show what I'm talking about.
On the left is the AppGameKit output and on the right is the same animation in Spriter Pro.
You can see that there is a problem with the limbs seeming to disappear.
The last two images really show that the problem is not with the sprites visibility but that they scale back to zero.
Has anyone else had this issue?
Do we know what is causing it?
Do we know how to work around/fix it?