Any way to develop using VS 2013? 2012 is no longer available from MS
try this thread.
https://rocket.unrealengine.com/questions/2376/is-vs2013-usable-with-rocket.html
(hope that link works)
it explains about VS2013 and has a link to download VS2012.
To add to what Michael said,
here is the exact link (found by Mike Fricker originally)
VS 2012 Download from MS
http://www.microsoft.com/en-us/download/details.aspx?id=34673