I don't know if this is the correct place to post this or not but I'm not sure where else to post. I downloaded Solarus and the quest editor won't open (Mac OS X) and this is part of the error message that pops up when it crashes.

Dyld Error Message:
  Library not loaded: @rpath/QtWidgets.framework/Versions/5/QtWidgets
  Referenced from: /Users/USER/Desktop/Solarus Quest Editor.app/Contents/MacOS/solarus-quest-editor
  Reason: image not found

I hope someone can help me out with some troubleshooting. Thanks for your time.