IMac, suddenly, no longer recognizes Cannon PowerShot SD750

For some odd reason my mac no longer recognizes my camera. It worked fine a week ago but when I plugged it in today, iPhoto doesn't automatically open and it doesn't even show up on my desktop. The only place where I can find it is in the system profiler, under the USB section. I tried repairing the permissions and restarting my mac and formatting the card in the digital camera but, so far, no success. All that happens when I plug the camera in is that the last photo viewed on the camera shows up on the camera's lcd display. This is pretty frustrating and any help would be highly appreciated.

I'm not sure that iPhoto's the problem - after all, Image Capture doesn't see the camera either, right?
However, to re-install iPhoto
First: *Back Up Your Library*
1. Put the iPhoto.app in the trash (Drag it from your Applcations Folder to the trash)
2. Go to HD/Library/Receipts and remove any pkg file there with iPhoto in the name
3. Re-install.
If you purchased an iLife Disk, then iPhoto is on it.
If iPhoto was installed on your Mac when you go it then it’s on the System Restore disks that came with your Mac. Insert the first one and opt to ‘Install Bundled Applications Only...’
Regards
TD

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