Cut and pasted from the closing message in the other thread: "P.S. It's not a blackboard -- it's a terminal screen icon. Apparently, you've got an installer that's either a UNIX executable (unlikely), or a broken installer package."
Anyway, you *might* try selecting Terminal as the application with which to open the executable on the off-chance that it is just a UNIX executable. But more likely, you just have a broken installer pachage on your hands.
tooki