SharePoint Designer Instalação - You must first uninstall his preview version...

Evento:

MS Office 2013 does not support upgrading from a pervious version of MS Office 2013. You must first uninstall these preview versions of MS Office 2013 products and associated technologies
MS Visio Professional 2013 / Microsoft Office Professional Plus 2013

Tratamento:

Navegue no registro do windows ate HKEY_CLASSES_ROOT\Installer\Products\ e localize a chave com prefixo 00005102 ou 00005119 e sufixo F01FEC.

Você precisará deletar essa chave, eu recomendo a realizar um backup da chave antes. Acima funciona apenas com Office (realmente) ativado.

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