I inadvertently stumbled into this problem when tinkering with tags. I had selected several pictures and selected a tag (I was actually going to search for pictures with a tag). When the tag (metadata) was applied the thumbnails disappeared. I am not exactly sure how to rescan thumbnails in a selected folder to see if I can restore the thumbnails. The thumbnails do not return if digiKam is closed and restarted. The problem is repeatable. If I select the now thumbnail-less image and select preview, digiKam responds with the message "The storage location of this image is currently not available." The image file still exists in the Windows directory structure and the date modified time appears unchanged. My suspicion is a problem with the thumbnails database, but I am not sure how to go about diagnosing this further. The thumbnails-digikam.db file appears to be updated based on the modification time of the file. My photos folder is located on a network drive (u:\media\photos) and I understand there are issues using digiKam with a NAS. However, this problem did not exist under digiKam 4.12 on Windows 10 (64-bit). (Or earlier versions of digiKam running on Win 10, Win 8.1, and Win XP). Any guidance will be greatly appreciated! Don
Created attachment 100748 [details] Album View of Missing Thumbnail Screenshot of album showing missing thumbnails after adding tag (tag is "TC")
Can you reproduce the problem using digiKam Linux AppImage bundle ? The last bundle is available at this url: https://drive.google.com/drive/folders/0BzeiVr-byqt5Y0tIRWVWelRJenM Gilles Caulier
Can you reproduce the problem with 5.4.0-pre release installer for Windows, available here : https://drive.google.com/drive/folders/0BzeiVr-byqt5Y0tIRWVWelRJenM
This problem still reproducible with current 5.8.0 - pre-release Windows bundle available here : https://files.kde.org/digikam/ Gilles Caulier
Don, The Windows installer have been recompiled with last changes from source code and is available here for testing : https://files.kde.org/digikam/ Take a care : it's a beta release. Make a database backup before to test. Problem still here ? Gilles Caulier
Don, We need a fresh feedback here. 6.1.0 pre-release installer is available here : https://files.kde.org/digikam/ Gilles Caulier
This problem has been fixed in digiKam-7.0.0. Applying tags to an offline collection does not result in the loss of the thumbnail. Maik