I am using Windows 8.1 so if you are running something different, the directions may be a bit different.
I downloaded ReplicatorG and Python from this link (In the software tab):
http://www.ff3dp.com/index.php/download ... rpro?tab=0
I installed Python first without a problem. Then I tried installing ReplicatorG but it would not install the drivers. I would get an error similar to this:
Basically you have to put windows into a special mode to allow the driver install. Directions for that can be found here:
http://revryl.com/2013/08/06/install-unsigned-drivers/
Follow the directions. Once you are in the special mode, install ReplicatorG like you normally would and it should work just fine. Then immediately restart your computer to refresh all your security setting back to normal.
Once it is installed, you never have to use it. Just plug your printer into your computer and open S3D. Then open the Printer Control Panel and click Connect.
Hope this helps!