Wikitude

I have two very simple scenes , in each of which a wikitude camera and image tracker , obviously each tracking different images if that matters, each seen works fine alone (when i launch it from editor) , but when I add a button that loads second scene from first Scene (simple button which all it does is : "SceneManager.LoadScene("SampleScene");")
The second scene camera wouldnt work - would get black screen or like corrupted look , even though if i run the second scene alone it works just fine (and the same for the other way around) , what is the issue here and what am i missing ?
the issue is in unity editor (didnt try to build) with professional edition wikitude