NOTE: In case of errors such as:

!1.132! WARNING: QmitkSliceWidget data is not an image!

!1.150! WARNING: QmitkSliceWidget data is not an image!

QmitkSliceWidget
Widget for displaying a single 2D slice of image data with a slice navigation slider.
Definition: QmitkSliceWidget.h:42

make sure your working directory is set correctly. This is especially an issue when directly running the application from the IDE. It should be set to:

$MITK_ROOT_DIRECTORY/build/MITK-build/bin