The official supported version with R2008a was Code Composer Studio 3.3 - since R2008a was not tested with CCS v4, there is no guarantee that this will work without any issues.
However, R2010b (the latest version, that you can upgrade to for free, if you have a license that's under maintenance) does support CCS v4. The system requirements for R2010b are here: http://www.mathworks.com/support/sysreq/current_release/
