Once I insert my camera card into my mac and load the raw images into lightroom I am able to edit them
As soon as I remove my camera card lightroom tells me the original files cannot be found and I have an exclamation mark in the corner of my images and when I click on it to further edit it, I cant and it says the image could not be found.
I did upload these so is there a reason why his is happening? It's on with certain camera cards, could they be corrupt or do you have any suggestions?
It seems that you had selected the option for "Add" when importing the images in Lightroom.
If you have not done much editing, remove the images from Lightroom and reimport the image while using the "Copy" option.
Or if you have done a lot of editing on images, reconnect the card, and move the images from the card to another location on your computer.