Did you authorize installation of applications outside AppStore ?
http://ioshacker.com/how-to/enable-the-installation-of-non-mac-ap p-store-apps-on-os-x
http://ioshacker.com/how-to/enable-the-installation-of-non-mac-ap p-store-apps-on-os-x
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Kervala - Ryzom volunteer developer - Working on different clients