I use Photo Viewer as a quickie slideshow of a new batch of pictures but lately it has taken to showing the image as-shot for about half a second then it mangles the exposure badly and orients vertical shots to horizontal. Anyone else having this nonsense happen?? It is only with CR2 files, not with JPG. It doesn't even seem to know it is doing this, since it doesn't offer to save changes or anything like that. The file explorer's thumbnails don't exhibit this and Windows Store insists the codec pack is installed and up to date. So I guess just the most recent patch of Photo Viewer is jacked up??