Error with vmtk extension

the following shows up in the python interactor and I cannot use the extension from there, only through the GUI. I´m using the latest stable release

Failed to load vtkSlicerCrossSectionAnalysisModuleLogicPython: No module named vtkSlicerShapeModuleMRMLPython
Failed to load vtkSlicerStenosisMeasurement3DModuleLogicPython: No module named vtkSlicerShapeModuleMRMLPython
[Qt] Error(s):
[Qt] CLI executable: C:/Users/User/AppData/Local/ 5.6.1/
[Qt] The process failed to start. Either the invoked program is missing, or you may have insufficient permissions to invoke the program.
[Qt] Fail to instantiate module “vtkvmtk”
[Qt] The following modules failed to be instantiated:
[Qt] vtkvmtk

This will persist in any Slicer version for now. It is harmless, don’t look at it.

This has been fixed. These messages do not appear in the Slicer Preview download. They are are harmless too.