Hopefully, I'm not alone here... I just upgraded from an XTi to an XSi, and normally shoot in JPEG+RAW. I'm using Aperture 2.1.1 and Leopard 10.5.4, so everything should be fine. Unfortunately, this is not the case. In Aperture, I can see the thumbnails of the XSi photos, but clicking on them brings up the burgundy "Unsupported Image Format" screen. This is consistent across all of the XSi RAW files, but the XSi JPEG pictures are fine, as are the JPEG and RAW files from my XTi. Is there something I'm missing here? I even went as far as trying to install the digital camera compatibility update (2.1), but the package installer said I already had a newer version (presumably rolled in to 10.5.4). I think I'm at the end of my rope here.