so idk if this is just an issue for me, but every time i press ESC to open the file browser, a prompt shows up saying that there isnt an application to open a URL.
I got the same issue too! My system is macOS Monterey ver 12.7.2. However, instead of getting the msg you got, mine just showed "the application cannot be opened -50" when I press ESC. Tried reinstalling, updating the system, changing the privacy and security settings and importing the files by hand ( that's all I could think of as a computer noob, sry ) and none of them worked, now I can't do anything on the app. :c
Hello, I have just found the solution to this issue after digging around in the community posts!
https://itch.io/t/3207102/uploading-sprites-with-mac
This method works for me, hope it can help you too, also big thanks to gaminioxo and CrazyBunni.