I just checked it in again. I checked the itk.org website and the class and file of itkSparseLevelSetNode.h are there. Xinwei On Tue, 26 Mar 2002, Lorensen, William E (CRD) wrote: > Xinwei, > Looks like you forgot to check in itkSparseLevelSetNode.h. The automatic header test detected the > defect. > > Bill >