So I was trying to use the com.newgrounds.SaveFile class.
My build succeeded with the import, but once I tried using SaveFile the build would fail and say it could not find SaveFile.
I got it to work by doing this instead:
var mySaveFile:com.newgrounds.SaveFile;
I'm happy its working now, but I don't understand why it won't work like this:
import com.newgrounds.SaveFile;
...
var mySaveFile:SaveFile;
If anyone could explain this to me that would be excellent.