There's a faster way to resolve the problem described here.
Just delete a file named "Rox.dat", which is in the "Contents" -> "MacOS" folder within the app's package content.
It works for me.
What a wonderful idea! Wish I have thought of it earlier, instead of navigating through the maze while in OS 9 to my OS X's desktop.
However, I can't seem to get it to work. Terminal reported "No such file or directory" error. Sigh. It's probably becoz I know nothing about UNIX commands...