AppArmor is currently only available in Debian "Testing". 
For AppArmor to work on Debian, it needs to be version 2.7.103-4 or higher. 
To activate AppArmor on Debian, run the following steps:

1) Install the latest version of Debian Wheezy.

2) sudo apt-get update && sudo apt-get upgrade

3) Edit /boot/grub/menu.lst and add "apparmor=1 security=apparmor" to your boot line(s). E.g it will read:

title Default
root (hd0)
kernel /vmlinuz root=/dev/xvda1 ro apparmor=1 security=apparmor
initrd /initrd.img

4) Reboot

5) apt-get install apparmor apparmor-profiles

6) sudo service apparmor restart

7) continue with regular install of R / RAppArmor