@TokyoDan: First update to 376. Second, change your game view to use even dimensions. 525 doesn't divide by two cleanly. Last, I don't get your dimensions... 1280x480 is very different from 525x700, and not just in size but in aspect ratio. What are you trying to do?
@RafiMagsi: I don't understand your question. If you're asking about using UITexture, then I see no issue with it. Just do that. Progress bars work with widgets.