mertyamak
I have seen a couple of topics regarding this problem but couldn't solve it yet. Here is the terminal output, anyone has a solution for this ?
Houdini requires X11 to be installed on your Mac. X11 is available from Apple, or on your OS X install DVD. Houdini itself does not use X11, but a helper program that we use to generate our icons does. We hope to eliminate that dependency in the future.
I hope that helps!