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AR doesn't work when swapping scenes

Hi guys, I am working on an app for my final project and I've been stuck for the past two days. Here is my problem:

I currently have two scenes in my app, one with ARCamera and the other with a normal camera. When my app loads, it loads straight into the AR scene which works perfectly, I have a button in that scene that loads the other scene(Application.loadLevel) and that other scene works fine too. But switching back to the ARScene it displays a black screen with a white line down the middle. Am I missing something? Please help? :)

 

I am using the latest vuforia and unity 5.2.1 and running the app on a galaxy s4 with Android Lollipop. I am also unable to test the app in playmode as my webcam is undetectable in unity, using an Acer Aspire.

 

Thank you in advance :)