Bruce,

Try opening it once with ctrl+click and answer the following answer withYES. The DMg most probably is okay, this is a new OS X feature.

Joachim

Am 05.11.2013 um 19:03 schrieb Bruce Prior <b.prior@ieee.org>:

Hi Damien,
I tried your .dmg file on my iMac running OS 10.9 (Mavericks). It didn't work. The error message is "Pharo.app is damaged and can't be opened." A second download and retry gave the same result.