"Cannot read property build" of undefined

screenshot: 

Hi, I will look into adding support for this with the next release! You will have to download the binaries from the release page for now, sorry for the inconvenience! This is my first real foray into itch.io 🙇‍♂️

This has now been added! More details in the devlog https://cblgh.itch.io/rad-reader/devlog/689209/bug-fixes-galore-and-osx-builds