/var/log/syslog
Sep 15 13:33:52 localhost kernel: [   47.949792] audit: type=1400 audit(1442324032.434:10): apparmor="DENIED" operation="open" profile="rest-led.sideload_rest-led_0.1" name="/sys/devices/platform/soc/3f200000.gpio/gpio/gpio26/direction" pid=786 comm="rest-led" requested_mask="wr" denied_mask="wr" fsuid=0 ouid=0

sudo vi /var/lib/apparmor/profiles/click_rest-led.sideload_rest-led_0.1
  # Specified write permissions
  /sys/devices/platform/soc/3f200000.gpio rwk,
  /sys/class/gpio/** rw,
    /sys/class/gpio/export rw,
  /sys/class/gpio/unexport rw,