Can't install WAMP

I've signed up for this course. And having problem installing WAMP. I've downloaded the file but can't run. It says file is corrupted. What can go wrong here?

Ya.. Sanjay is right May be the installer has got corrupted. Try to download a new copy and then install. If u have any doubts regarding how to download and install Wamp Server Go to web developer course -> Start learning HTML now -> Install PHP 5, Apache, MySQL on Windows using WampServer and watch the video..If still Problem exists reply here.

May be the installer has got corrupted. Try to download a new copy and then install.