Because I wanted to have all my games on a separate partition, I first tried to copy and paste the RBR install folder from C:\ to D:\. Although I could play the game that way, I could not save the progress. When saving I got an error that saving failed. Then I uninstalled the game and did a new install on D:\, applied both patches and started the game. To my surprise I got a runtime error and the game did not start. Then I got the idea of running RBR as Administrator and that solved it. Now I wonder if this is normal and to be expected. In other words, when RBR is on another partition than C:\ is it necessary to run it as Administrator ? FWIW, I have Windows 7 Professional 64bit, RSRBR2011 is not installed yet and I didn't have that problem with other games.