Wrong database after update to version 5.6

[gnanninga]

After installing the new version 5.6 and starting the new function "Hierarchical view" I get a message saying that the database is not correct.

[gnanninga]

This only happens if you had installed the version 5.5. 

The hierarchical View uses a new database that is not in the parameters used. 
Here is the workaround:

Go to "Change database" und use the new button to change the Idea file (4. option). For now select "Ideen.db" and update.
Then you can start the new function and it will work