How do I put my info on the metadata of the camera

SOURCE: Can't load photos to computer

Also if the computer's file management system successfully allowed you to retrieve the pictures, then the whole computer and camera systems are working. Perhaps you could then reload the camera's software. Sometimes camera software drivers get corrupted. Your camera manufacturer probably has a site to download the latest software with enhancements and fixes.

SOURCE: Canon 40D upload photos - camera busy -

When you fist connect the camera, the computer performs an initial scan of all the images on the card. This can take a while with slower cards and if there is a lot of images, slower again. Sometimes an error on the card may even slow things down as well. If you manage to get your pictures off the card, try formatting it using the format option in the cameras menu and see if that improves perfomance. Otherwise a better card may be in order.

SOURCE: Canon PowerShot A620 Camera wont upload to Computer

Use a cardreader to download your pictures.

SOURCE: Trying to upload photos from my Canon Power shot

if using iPhoto, check for software updates. When the newer cameras come out, sometimes it results in incompatibility with the software and they're always working to update this.
Also check your card in your camera. Some of the newer high speed cards struggle with uploads. You can purchase aftermarket high speed card readers and this will allow firewire rapid uploads direct to iPhoto and Aperture.

SOURCE: camera reads communication error when trying to

I BELIEVE THE REASON IS THE TYPE OF SD CARD.
THERE ARE SD AND SDHC. IF YOU ARE USING SDHC.
I BET THE ONE CARD THAT DOESNT READ IS AN HC. THIS IS ALSO TRUE WITH OLDER CARD READERS. I HAVE AN OLDER AND NEWER CARD READER.
I JUST HAPPENED TO PUT AN OLDER SD CARD IN MY NEW POWERSHOT SD1300 AND IT READS FINE, ALL NEW CARDS SDHC WONT READ.
I BELIEVE SD IS UP TO 2GIGS AND SDHC IS 4GIGS AND HIGHER.