Thank you so much for the clarification and help, you are awesome as usual Jonathan!
Explaining the difference between the two clickthrough types is excellent, it’s really clear to me now.
I will use your guide ( Creating HTML5 Advertisements for Sizmek in Tumult Hype ) and allocate the simple ‘clickthrough’ to a transparent shape covering the entire top layer of the ad so that they can write their own exit URL’s when they’ve uploaded the files to Sizmek.
I’ll report back later to confirm this is all working correctly.
If I could send you doughnuts I would 