#64 Error launching Pencil from Mac OSX 10.6.8

Fully patched Macbook, downloaded Pencil 0.4.4b Intel, when launching from Finder nothing happens, when launching from command line get the error message:

open Pencil-0.4.4b-intel\ mac/Pencil.app
LSOpenURLsWithRole() failed with error -10810 for the file /Users/rafaelsantos/Downloads/Pencil-0.4.4b-intel mac/Pencil.app.

[Rebecca Novelli]

Would someone please update the Pencil website with the OS X versions that Pencil will run on? It says 10.4+ but it doesn't run on more recent versions of OS X.