Corona reverses colors in render

[Konix]

Hello,
so currently I am working on a school project, we are told to create a commercial for whatever we want. Now we are working on a render scene in C4D with corona render, presenting an energy drink can. The problem is that corona reverses the colors when rendering the scene, as shown down below.So basically I know its a problem with the Alpha and texture settings in the material.
 So that's what I have done until now:
I made a new material with an Alpha channel and added the logo. Then I realized the logo on the can is not colored, so I added a texture to the material with the same image (the logo).
Here is the scene setup as a download: https://mega.nz/#!1TpGRCLa

I hope you can help me!
Best regards Konix

[Nejc Kilar]

Are you by any chance using stacked materials? :)