I am aware that the RC2 version has a reported rendering problem on the download page. What I want to report is something which may have already been reported. Blends that I have opened and resaved in the 2.70RC2 version have the same problem when being rendered in the official 2.69. Files created and only modified in the 2.69 version render properly in both the 2.69 and 2.70RC2 versions.
Thanks for the great program and everyones continued efforts