I installed recently released SSDT BI tools for VS2012 and I can work on my existing SSIS/SSAS projects all well in VS2012, including build, deploy and process SSAS cubes, etc.
But when I try to build my SSIS/SSAS projects via the command line of VS2012, such as
devenv.exe mySolution.sln /rebuild Release /out "C:\temp\buildLog.txt"
I will get the error like below in the log file.
Error: Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED))
I can do that with VS2010 with the BI tools installed with SQL Server 2012.
I'm on Windows 7 Enterprise 64-bit, and I have both VS2010 and VS2012 installed at the same time, together with SQL Server 2012 developer edition.