…I had troubles trying to download them because the memory wouldn't let me do it,
That's an indication of hardware issues right there. Your "downloaded" files appear to be corrupted. Do you still have the originals on the card?
I am having a similar problem. I downloaded CR2 files from my camera to my computer and CS3 Bridge will not recognize the files, allow me to open in Camera Raw or open in CS3 Photoshop. I also stuck the same memory card in a Lexar mem card reader and attempted to download to my Mac in CS4 Bridge and that version of Photoshop and Bridge won't recognize the files either, however the CR2 files do appear, where I can view the thumbnails, in iPhoto. All original files are still on the memory cards (4 cards worth of wedding photos!). I've downloaded Camera Raw updates for both cs3 and cs4 on my windows pc and my mac and still no luck. I'm at my witts end! Help!
Oh yeah, forgot to add that I shot more images on one of the same cards with the CR2 files that won't appear still on it today and those are appearing for the most part in CS3 Bridge, but there are a few that don't appear.