I am trying to install
Haskell-2012.4.0.0.exe on my computer running windows 7.
When I run the installer I get the following message and the installation fails,
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
How do I fix this issue and get it to install?