I am flying away whilst climbing

i am following the ue4 2d side stroller tutorial p4 to make a ladder. i have perfect replication of the bp’s used however my character is flying away after passing the roof of the ladder and is not allowing me to climb down.
https://forums.unrealengine.com/attachment.php?attachmentid=93685&d=1463507928
https://forums.unrealengine.com/attachment.php?attachmentid=93686&d=1463507946
https://forums.unrealengine.com/attachment.php?attachmentid=93687&d=1463507989
https://forums.unrealengine.com/attachment.php?attachmentid=93688&d=1463508021
these are the snippets from the tutorial.

update:
i have been looking at the blueprints and i feel the issue lies with detecting where the ladder is… i have the ray that is supposed to apear and detect the ladder however there is no such ray