After every -even minor - update, the selection of KIPI-modules is set to default. E.g. I deselect all export plugins of providers, I don't use. But digikam didn't remind this selection after an update. Even when the list haven't changed. All versions up from 2.x are affected. If this is no bug, it will be a a very urgend wish. It's simply annoying, especially if you're updating your system in short periods.
Juergen, This file still valid using last digiKam 4.2.0 ? Gilles Caulier
*** This bug has been marked as a duplicate of bug 338871 ***
Problem fixed in 6.0.0 where all tools are now in digiKam core