Instalação falhada Erro desconhecido no instalador do Lion

Ao fazer a instalação do OS X Lion no macbook pro a partir da Apple Store aparece a mensagem
"Instalação falhada  não foi possível instalar o Mac OS X no computador - ocorreu um erro desconhecido no Instalador que impediua instalação. Contacte o fabricante do software.
When I installing OS X Lion on macbook pro appears the next message
"Installation failed unable to install Mac OS X on your computer - An unknown error occurred in the installer. Contact the software manufacturer.

press the restart button. 

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