Since upgrading to version 5.5, when I import photos from a folder in the Pictures folder on my Macintosh HD, Lightroom does not display the added folder under the Pictures folder in the Library module. Instead, it displays it under Macintosh HD, as if that were directly the parent of the new folder. When I select the folder and click on 'Show Parent Folder', I get an error message:
Database "/Users/[username]/Pictures/Lightroom/Lightroom 5 Catalog.lrcat": columns rootFolder, pathFromRoot are not unique Statement: UPDATE AgLibraryFolder SET rootFolder = ?,pathFromRoot = ? WHERE id_local = ?;
And if I try to more the folder to put it under Pictures, Lightroom tells me that a folder of the same name already exists in that location.
Previously, added folders were listed under the main Pictures folder and I had no problems displaying the parent folder.
Don't know if you figured this out yet. I was having the same problem after I upgraded to Yosemite on my Mac. Before trying anything, make sure you have a backup. The solution I came up with was to quit LR, rename the parent folder on the Macintosh HD, open LR again, and then right click on the child folder (which LR will have lost track of and there will a question mark on it) show LR its new location, Lr will add the child, and then "Show Parent Folder" will work.
I did try chatting with support and they had me create a new catalog, import the old one, but I still had the same issues.