Here try this:
Step 1:Uninstall all components of Scarlet Blade
Step 2:Turn off firewall and antivirus, make sure they are completely off until you can log into the game
Step 3: Download the setup from here Scarlet Blade Setup
Step 4: Click the setup and download it, an icon should appear.
Step 5: The patch should go through.
Mirrors or other problems can be found here Common Issue of Scarlet Blade Installation
Hopefully you won't need this second link. If you are running on Window 8, change the compatibility to Window 7.