thank you for your answer yes I did exactly what you said but still the same problem a bug in the system <http://itk-users.7.n7.nabble.com/file/n30267/2012-12-05_092346.png> -- View this message in context: http://itk-users.7.n7.nabble.com/Imageregistration1-tp30265p30267.html Sent from the ITK - Users mailing list archive at Nabble.com.