Hi, I have the same error that Mirtha reported in 2007 using FSL 4.1.4: after 43 slices processed "Queuing post processing stage" after running for more than 24 hours. I also get the error /Applications/fsl/bin/bedpostx: line 220: 3633 Terminated ${subjdir}.bedpostX/monitor bedpostx data check as below. There are no files that are generated. data_type INT16 dim1 256 dim2 256 dim3 44 dim4 56 datatype 4 pixdim1 1.0155999660 pixdim2 1.0155999660 pixdim3 2.9999427795 pixdim4 1.0000000000 cal_max 0.0000 cal_min 0.0000 file_type NIFTI-1+ /Volumes/Science/Hearing_Disorders/MRI_Data/CI09/CI09-03/CI09- 03_dir4_Process/nodif_brain_mask data_type INT16 dim1 256 dim2 256 dim3 44 dim4 1 datatype 4 pixdim1 1.0155999660 pixdim2 1.0155999660 pixdim3 2.9999427795 pixdim4 1.0000000000 cal_max 0.0000 cal_min 0.0000 file_type NIFTI-1+ num lines in /Volumes/Science/Hearing_Disorders/MRI_Data/CI09/CI09-03/CI09- 03_dir4_Process/bvals 1 num words in /Volumes/Science/Hearing_Disorders/MRI_Data/CI09/CI09-03/CI09- 03_dir4_Process/bvals 56 num lines in /Volumes/Science/Hearing_Disorders/MRI_Data/CI09/CI09-03/CI09- 03_dir4_Process/bvecs 3 num words in /Volumes/Science/Hearing_Disorders/MRI_Data/CI09/CI09-03/CI09- 03_dir4_Process/bvecs 168 Any ideas appreciated. Thank you. Regards, Vanessa