it says your installer download is corrupt.
try a different browers and/or wired connect or use a download manager.
or download from prodesigntools.com
if you follow all 7 steps you can directly download from prodesigntools: Adobe CC 2015 Direct Download Links: Creative Cloud 2015 Release | ProDesignTools
if you have a problem starting the download, you didn't follow all 7 steps, or your browser does not accept cookies.
the most common problem is caused by failing to meticulously follow steps 1,2 and/or 3 (which adds a cookie to your system enabling you to download the correct version from adobe.com).
failure to obtain that cookie results in an error page being displayed after clicking a link on prodesigntools.com or initiates the download of an incorrect (eg, current) version.