Phone [Q] SPen pop up won't work - Rooted Hawkish Extreme v5

I've recently flashed Hawkish Extreme v5 on my GN2 N7100. Everything's working great except for the Snote pop up function. The device recognises the detachment of the spen, but doesn't fire up Snote in response. This is after having selected the option in settings.

If I try to click 'Pen detachment options' in Spen settings, the phone freezes and settings force closes. Curiously enough, I have 2 entries saying 'Pen detachment options' in Settings. One causes an fc, the other let's me chose Snote, but doesn't change anything.

Would appreciate the help - really used the pop up feature regularly on touchwiz.