If the CORONA version is higher than 1.4: “For Corona render, it is recommended to set the version to at least 1.5, since the glossiness of materials is adjusted with PBR in mind.
TO MAC USERS: If RAR password doesn't work, use this archive program:
RAR Expander 0.8.5 Beta 4 and extract password protected files without error.
TO WIN USERS: If RAR password doesn't work, use this archive program:
Latest Winrar and extract password protected files without error.