[Huxley]

This isn't my problem but my friend's, I checked his problem via Team Viewer.
When I opened the installer and clicked Run, an error window popped. It said: Installer integrity check has failed. Common causes include incomplete download and damaged media. Contact the installer's author to obtain a new copy. More information at: http://nsis.sf.net/NSIS_Error

That's all, I have no problem and the installation went smooth for me.