Hi,
I removed the link, you are not allowed to redistribute paid assets. I don't blame you, packaging is a bit a pain in such projects... but next time, double check you don't include what can be downloaded from the asset store directly.
As for the scene. I can't really get into it, I don't understand where you have this issue. I assume you are refering to Vuforia-CylinderTarget scene right?
Where did you get the TouchRaycaster script from ?
You are facing issues with compatibility between ngui and vuforia. PlayMaker is not yet involved here
basically, you need to target the right camera, ngui has its own camera ( in UI ROOT), and so it's strongly recommanded ( I guess mandatory) to use ngui camera to do all the touch input work especially if you want to catch user interaction with ngui elements. ngui has all the scripts and systems for this, why not using this?
Bye,
Jean