Version: (using KDE 4.2.96) Installed from: Debian testing/unstable Packages When running 4.2.96 for the first time(s) Korganizer was unable to import the old resources. Going to ".kde/share/apps/korganizer/" I clicked on "std.ics ", Korganizer started and gave a few options for importing. Choosing "merge into existing calendar" Korganizer will show an error dialog: "There is no resource available.". Closing the dialog will just make it appear once more and so on. Maybe for another report: Choosing "Add as new calendar" will show the old data just right, but at a new startup they will be lost.
This is still alive in 4.3.1 and prevents me importing the old calendar (in turn preventing the usage of Korganizer).
Fixed with akonadi. ( 4.6. )