Webcam int error on Samsung S6

Hi guys,

I have a Samsung S6 and made an application using Unreal4ar and works perfectly on my phone. I took this application to my office and install another Samsung S6 like mine, only this second one I get the following error message.

**Webcam int error

**What can it be? The phone has nothing installed outside this application I made. I have to have that application running on this phone, can someone help me?

Thanks