I can open the T1 in BrainSuite without any problems, also in mricron or unzip it with 7-zip, no problem. The error occurs when running the distortion correction in bdp:
bdp.exe t1.bfc.nii.gz –nii dwi.nii –bmat table.mat –dwi-mask mask.nii
Reading input flags…
Checking input files…
Error using gunzip>gunzipwrite (line 184)
File “t1.bfc.nii.gz” is not in GZIP format.
Error in gunzip>gunzipEntries (line 122)
Error in gunzip (line 64)
Error in load_untouch_nii_gz (line 53)
Error in check_nifti_file (line 40)
Error in bdp_setup (line 745)
Error in BrainSuite_Diffusion_pipeline (line 14)
MATLAB:gunzip:notGzipFormat
Best
Stefan