I just upgraded from version 9 to version 10, but my game stopped working with this new version. I get the following error at startup:
ERROR: Attempted to set the ^ key on the DragonRuby's Keyboard data structure, but the property isn't available. You should contact DragonRuby and tell them to add this key to the @char_to_method hash.
I am running this on MacOS High Sierra 10.13.6.