any update for the plugin yet?? p.s. when will spriter 2 release?
I apologize. I thought I had replied back here about it after I heard back from Ashley. The ability to import individual sprites needs to wait for the Custom Importer for the C3 plugin sdk to be a little further along. It is on the Ashley's todo list, though.
Don't forget you can still import and use the animations in C3 using the other method quoted in xahdy's thread. As for Spriter2 - Unfortunately, I still can't give an ETA or any concrete information for multiple reasons. I can say we're making steady progress. We should be able to give some better info by the end of next month.
Why I can't save it?
When the outline of the spritesheet is red, as in your screenshot, it means the spritesheet isn't large enough to hold all of the sprites. On the bottom left of your screenshot, where you have 'max' set to 1024. Just change 'max' to 'target', which I believe is the default. This should fix it.