you wind all correct Drivers and other Downlaods for you S1200BTL here https://downloadcenter.intel.com/product/61077/Intel-Server-Board-S1200BT . The actual Intel Raid Web Console 2 are (23.07.2015) here Intel® Download Center - its Version 14.11.01.00. Furthermore you should use the actual Firmware and the right Driver for your RAID Controller. Care that the Intel Raid Web Console 2 is an Intel Solution basend on LSI. So you can only manage Intel or LSI Raid Controllers and Volumes with this Solution.
If you use teh onboard RAID Solution you should now, that RST dont work with Intel RAID Web Console 2. Instead you could use the RST GUI: Intel® Download Center.