Of course! I have never seen an animation play in the editor but throw an error in game. And the image it is searching for IS in the correct folder so it's very confusing for me.
That being said, this is the coolest animation pack I have ever seen and I can't tell you how PERFECT it is for my project.
I really hope you continue this series of pixel animations, I will buy them all day 1 :D Thank you for your hard work!