 <p>Frame will be different at run time: this means that the location of a frame on the storyboard is different than where your constraints dictate it should be.</p> <p>Ambiguous: this means that you're missing some constraints.</p> <p>To resolve these issues, if you open up your storyboard, you'll see yellow or red arrows beside certain scenes on the list to the left. Clicking the arrow will reveal a view with all the issues with that scene. To fix the "frame will be different at run time" error, change the x, y, width, and height of the frame rectangle of the view with the wrong frame. To fix the ambiguous warning, add extra constraints.</p>