Jeremy, this seems strange. Did you uninstall RSRBR2011 and RBR totally, and delete all files in the old RBR installation, before installing RBR again and then RSRBR2012? Do you have a file in the main RBR folder named physics.rbz? Mine is 248kb. This sounds to me like it is linked to the problems you had in the last RDRC Round, because RSRBR always checks the physics file to make sure the physics are default. Very strange.