Wow, a lot of posts to weed through 🙂 Yes, I'm having the exact same issue. Yes, I called Apple Support and they were clueless. To recap, I take photos with the iPhone 4S in portrait mode, using the home button. My iPhone and the iTunes library supporting it are up to the very latest versions available. I use Windows Photo Viewer on an HP desktop running Windows 7, to view, manage and/or occasionally rotate pictures before saving them. If I have to do anything more than rotate or toggle through pictures, I use a more upscale and robust photo editing software package. This system has worked absolutely fine for me, for years, until I migrated to the iPhone 4S about a month ago. Now, I wind up sending folks a lot of sideways images, a known issue, I understand it and choose not to turn my phone sideways or use other buttons to take a picture, not impotant, this is not the big issue. The BIG issue is that when I rotate pictures within Windows Photo Viewer, whether I try to toggle to the next or previous picture, or save the one that I just rotated, I get the dreaded "Windows Photo Viewer cannot save this picture due to an error with its properties" message. It's really more of a pain and a big waste of time more than anything. I'm just glad to see that I am not alone 🙂 Hey, I like Windows Photo Viewer, mostly because it's simple, easy, it allows me to toggle back and forth between pictures, and one click to email, open a true photo editor, etc. But I am not attached to Windows Photo Viewer, I am up for anything and everything in the way of alternatives to Windows Photo Viewer (i.e. Picassa, Paint, Lossless JPG Rotator, whatever), so long as it provides the same kind of basic functionality, but all of the functions that I just mentioned. Otherwise, I'd like to just get Windows Photo Viewer working with the iPhone 4S without issues. Look at all of the posts on this one! Does anyone at Apple know or care about this?? Thanks in advance for your help.