Waiting to animate!

Hi all, I am a recently retired illustrator, both conventional and digital, and have been dabbling with Pencil 2d and Blender for a while. I have an animation project in mind which involves painted backgrounds and conventionally drawn figures, etc, no vector art. I saw Synfig and was impressed with look of interface, etc. Downloaded it on Mac, then discovered it doesn’t open properly!
Anyway, that’s my info done! Now to dig into the forums try and sort the problem out.
Cheers for now.