I just opened two images and clicked on "Calculate Transformation". Application crashed with the following message:

"Qt has caught an exception thrown from an event handler. Throwing
exceptions from an event handler is not supported in Qt. You must
reimplement QApplication::notify() and catch all exceptions there.

terminate called after throwing an instance of 'itk::InvalidRequestedRegionError'

what():  /usr/tmp/InsightToolkit-3.8.0/Code/Common/itkDataObject.cxx:397:

Requested region is (at least partially) outside the largest possible region.
Aborted"