Symptoms

The Apple Remote Desktop 3.3 installer may report that it requires Mac OS X v10.6 when used with OS X Lion. In Mountain Lion, the Apple Remote Desktop 3.3 installer may report that ""RemoteDesktop.mpkg" can't be opened because it is from a an unidentified developer."

Resolution

Follow these steps to install Apple Remote Desktop and update it to a version compatible with Lion or Mountain Lion.

1. Copy the Apple Remote Desktop Installer from the Installation disc to the desktop.
2. Press and hold the Control key and click the Installer icon.
3. In the contextual menu that appears, choose Show Package Contents.
4. In the package contents, navigate to Contents/Installers.
5. Control-click RemoteDesktopAdmin.pkg and choose Show Package Contents.
6. In the package contents, double-click the Archive.pax.gz file to expand it.
7. In the expanded archive, navigate to Archive/Applications/ and drag Remote Desktop to your Applications folder.
8. Run Software Update immediately to update Remote Desktop to the latest version.