I have a question about this Blu-ray set. Some copies have a yellow UPC sticker instead of a white UPC just like THE WRATH OF KHAN Blu-ray. On THE WRATH OF KHAN Blu-ray the yellow UPC means it's a corrected disc, early copies had a defect. I was wondering if that's the case with the STAR TREK set? I haven't heard about any defects on the set, but why the yellow UPC?