My previous setup was to have 2 profiles access photos on the internal drive. Now I've created an additional profile and purchased an external drive. Not paying attention to the file structure of iPhoto, I copied many pictures onto the new drive. Now all I get is a spinning beach ball and no faces, even though I'm told that there are faces to confirm. iPhoto appears to be working correctly under the old profile and original picture locations. Can someone help me migrate to the new profile/new drive?