At the moment, persistence data is stored at different file locations depending on the persistence mechanism that was used (e.g. Qt settings, BlueBerry persistence or the MITK persistence module). This makes it hard to reset the data when an error occurs during loading of the persistence data and might block a start of the application.
A unified easy way to reset this data would be very helpful.
without driving anything into a preferred direction: the persistence module could do the job because it has no dependencies than MitkCore and TinyXML. Of course the service class would have to be instructed by some "upper" instance to clean the data on startup by means of a command line option
I found out that we save persistence data in:
(for linux)
$HOME/.config/DKFZ
$HOME/.config/MITK US
Here is a general guide where Qt is saving settings per default:
http://qt-project.org/doc/qt-4.8/qsettings.html#locations-where-application-settings-are-stored