Hi. I'm having the same problem as Jaydon. I've tried with my own animation and with the greyman example off the spriter site.
I tried following along with the youtube example here (i cant post urls yet apparently):
youtube.com/watch?v=2yLiMxoUIVs
The plugin is installed correctly and the greyman appears in Construct 2's editor mode. All the files exist in the project folders. The event sheet is set up correctly.
But when I try to preview it (tried in chrome, firefox, and node webkit), the greyman is not there.
I tried to place the greyman in the layout itself and he does not show up at all when previewed.
Any thoughts? I'm using the steam version of Construct 2.