URGENT!!!!Guys... What do I do? Can not view my prototype. I did check images folder...
What I would try first is starting from scratch: Copy all your code into a fresh project, reimport from sketch, move your assets (if any) into the new project.
A blank screen sometimes happens if there is something wrong on the Sketch side ... for example, if one of your layers starts with a number. But then, it's odd that you do not get an error message. Maybe others have better ideas about the possible source of the problem.
If Ben Rodenhäuser's suggestions don't do the trick, please share us a link (here, or via support email) and we'll dive in.
Thanks Guys... I'll get back to you.