hi luis.., thanx for ur advices.., when using the AnisotropicDiffusionFLTKGUI3D application found in SegmentationEditorFltkGui application. when use "Save" i type a file to be saved Filename.Raw but No file Saved..what's wrong? yasser __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search . yahoo . com