Hi Chris, 

Please see attached corrupt file. 

This is the file permissions of the file:

-rw-r--r-- 1 Xerhad staff 3610868 Dec 28 18:56 corr_Subject001_Condition001_Source001.nii
And this is the result from fslhd:
filename corr_Subject001_Condition001_Source001.nii
size of header 348
data_type FLOAT32
dim0 3
dim1 91
dim2 109
dim3 91
dim4 1
dim5 1
dim6 1
dim7 1
vox_units mm
time_units s
datatype 16
nbyper 4
bitpix 32
pixdim0 -1.000000
pixdim1 2.000000
pixdim2 2.000000
pixdim3 2.000000
pixdim4 0.000000
pixdim5 0.000000
pixdim6 0.000000
pixdim7 0.000000
vox_offset 352
cal_max 0.000000
cal_min 0.000000
scl_slope 1.000000
scl_inter 0.000000
phase_dim 0
freq_dim 0
slice_dim 0
slice_name Unknown
slice_code 0
slice_start 0
slice_end 0
slice_duration 0.000000
toffset 0.000000
intent Unknown
intent_code 0
intent_name
intent_p1 0.000000
intent_p2 0.000000
intent_p3 0.000000
qform_name Aligned Anat
qform_code 2
qto_xyz:1 -2.000000 0.000000 -0.000000 90.000000
qto_xyz:2 0.000000 2.000000 -0.000000 -126.000000
qto_xyz:3 0.000000 0.000000 2.000000 -72.000000
qto_xyz:4 0.000000 0.000000 0.000000 1.000000
qform_xorient Right-to-Left
qform_yorient Posterior-to-Anterior
qform_zorient Inferior-to-Superior
sform_name Aligned Anat
sform_code 2
sto_xyz:1 -2.000000 0.000000 0.000000 90.000000
sto_xyz:2 0.000000 2.000000 0.000000 -126.000000
sto_xyz:3 0.000000 0.000000 2.000000 -72.000000
sto_xyz:4 0.000000 0.000000 0.000000 1.000000
sform_xorient Right-to-Left
sform_yorient Posterior-to-Anterior
sform_zorient Inferior-to-Superior
file_type NIFTI-1+
file_code 1
descrip
aux_file

Could you help further? 

Best Regard, 
Hanna Eriksson