My first trial of the Rescue Kit for Mac wasn't a success. I have a late 2013 iMac (with OS X 10.9.5). After booting from the Rescue Kit disk, the expected display (as described in the manual) appeared. However, I couldn't make any contact with the program (couldn't move the cursor), neither with the Magic Mouse nor with the USB keyboard. I had to power off the system and reboot it. Is there a solution for this problem?