Up graded to yosemite, imac no longer see's Canon 7d.

I used iphoto in the week to down load some pics as normal. Upgraded to Yosemite a day or so later. I can no longer see my Canon 7d auto on  my imac. The auto update updated iphoto also. Yosemite Version 10.10.1 - iphoto Version 9.6 (910.29). How can i get it back to seeing the camera. Usb port ok, usb lead ok.

HI,
Go to /Library/Preferences. Move all the files in the System Configuration folder to the Trash, restart the iMac.
That doesn't alter your settings, just resets Airport.
Carolyn

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