Hi FSLers Hope all is well, Using FSL version 4, I was kind of playing around with fslstats function. Every time I try to calculate the entropy of the non-zero voxels, I get this error : Fslstats -E Image Exception : #5 :: Out of Bounds (time index) terminate called after throwing an instance of 'RBD_COMMON::BaseException' Aborted This error has been consistent through most of my images, but If I try *-e* option, it works fine Has anyone experience this? Many thanks -P