I built ITK again. This time the option ITK_USE_REVIEW_STATISTICS turned OFF. and all worked... -- View this message in context: http://itk-insight-users.2283740.n2.nabble.com/linker-error-with-mutualinformation-example-tp6592749p6608523.html Sent from the ITK Insight Users mailing list archive at Nabble.com.