Hmm. Couldn't find any reference to that in the requirements link (http://msdn.microsoft.com/en-us/library/ms143506(v=sql.110).aspx) except:
"To make sure that the Visual Studio component can be installed correctly, SQL Server requires you to install an update." No other mention anywhere - typical MS :-}

>SSRS in SQL 2012 uses VS2010 shell.
>
>>Sorry, just saw the OS in the header Network box. I don't see why there would be any dependency on VS.
>>Was the log listing that you posted the *entire* log - I haven't seen any reference to the actual error you're getting.
>>(BTW just noticed that when I use 'View entire thread' attachments are not shown)