Quote Originally Posted by j3ff790 View Post
This solution worked for me:

1. Go to the start menu, and search for the "cmd" function.

2. Drag the downloaded HON client onto the black box (the directory of the HON client will appear).

3. Press space and type /NCRC.

The above should allow you to bypass the NSIS error!

*Taken from http://www.ehow.com/how_5541530_fix-nsis-error.html
Don't do this. All it will do is ignore the error and install a corrupted version of HoN. Try using different methods of re-downloading the installer until you get a version that works.