Help with diamond district data packet

#1UltraKaijuPosted 10/28/2013 5:54:52 PM
I am unable to unlock the diamond district Enigma data packet that requires Grappling up above it and then glide to the pressure pad on the building wall opposite you then Wall gliding off it once you hit to another pressure pad on the opposite building right below the data packet. I've watched videos & done exactly as the videos do but when I land to grab the packet it either has never opened or it resets & closes.

Gamesradar.com/batman-arkham-origins-enigma-data-pack-locations-guide/?page=18

It's the 3rd one on that list that I'm having trouble with