Why does my external HD show up twice in the folders panel in Library mode?
Also all my photos have the ! in the top right corner, I have tried to locate them, but it doesn't work.
Help is much appreciated!
You have two separate problems that may need separate answers.
The Duplicate HD is a bug that affects some people, (maybe caused by import problems) and the best to answer that problem I have seen is Jim Wilde. See one of his answers in the second post at this thread-
It also has been seen as duplicate folders, which is the same problem.
Photos "Missing" with the '!' in the top right corner have been changed by the operating system (and you)- they may have been re-named, moved, deleted, or folders re-named, moved, deleted, or the external drive dis-connected.
I think we will need to see some screen-clips of your folders panel to help with specific answers.
And other 'User' gurus may have the answers for you.
Thank you, I appreciate your help!