Due to missing defined axial, sagittal, coronal and 3D render windows
 the slice interpolator can not be correctly initialized and thus the segmentation plugin does not work correctly. (see T29203: [Multi widget] Make classes work with the new render window names and T29362: [mxn multi widget] Plane suggestion of QmitkSlicesInterpolator does not work correctly)
- the geometry-comparison for enabling the segmentation tool fails (missing "3d" render window)
A related problem was already mentioned in T25595.