Sorry that didn't help. Please try to install another program and see if this succeeds.
If not, please check your Program Files (or "Program Files (x86)") folder for an "Eye-Fi" folder. What files did you find inside? Please delete that Eye-Fi folder and see if you can install now. If it still fails, please check to see if you have "Microsoft Visual C++ 2005 Redistributable" installed, and if so, please remove it and then try the Eye-Fi installer again.
It should not be necessary to disable any security programs to install our software, but please try that as well.
If you are still receiving errors during installation, please email us at email@example.com
with a description of the issue, a list of the steps you've tried, and a link to this thread. It may be an OS issue, but we'll see if we can help.