Quitleusere

It seems to work in CS4 too!
Opening the test file gave me some errors:
"This document contains unknown data which will be discarded to keep layers editable. […]"
and
"Some groups were found corrupted and repaired."
Running the script on that file gave me a Spriter file and accompanying png files, so that it looks the same as the psd file when it's loaded into Spriter. But I got no bones.
The problems with it are obviously the 5 nested groups limit you mentioned. Instead of a "root" group, I get an empty and hidden "root" layer. If I remove enough parts so that it fits in five nested groups, put the bones in a root group, and hide the bone layers, I do get bones. Odd looking (all horizontal - but I guess that's how it should be, as the bones in your sample spriter file looks the same), but functional bones.
So thanks! It is indeed working in CS4 too. The bone creation is less useful due to Photoshop's group limitation, but even without that, I'm sure that it'll prove useful!

Trixtor have you got any messager clients i can contact you on?

Hi :)
I have been horribly ignoring Spriter since the kickstarter finished so i decided to change that and start on a java implementation this weekend, progress so far can be found below.
https://github.com/Discobeard/spriter
Its obviously rather rough at the moment but i am planning on putting some serious effort in the coming weeks.
The example project i have there is for the lwjgl with Slick2D Texture, but i have been trying to code quite generically it so it can be used in various frameworks with little effort.
Implementation is quite basic at the moment

Spriter spriter = new Spriter(path_to_SCML_folder,drawer,fileloader);
spriter.playAnimation(animation number);

spriter.draw(x coord,y coord);//will draw the current state of the animation using your custom drawer
Would love to get some help, moral support, ideas or comments on how to move forward.
EDIT:
Trixtor is going to take of the main work now, as i am just to lazy at the moment to keep things going at a decent speed. His fork can be found below.
https://github.com/Trixt0r/spriter