We have the same problem as EnigmaFlower. After downloading, opening and unzipping the files and then opening the Main application .exe file, I get the message:
Unhandled exception in script. Failed to execute script 'main' due to an unhandled exception: No file 'sprites/lineart.png' found in working directory 'C:\Users\mgwoo\Downloads'
I see this .png file is in the Sprites folder in the downloaded release. Any suggestions how to get this to work?