Hello,

With an error that deep, I would check these items:

1)  Do you have permissions/abilities to add/create files in: /Users/louislin/Documents/Imaging
2)  Is there enough disk space at the write location?
3)  Do a 'which spm_write_vol' and 'which spm_create_vol'.  These should be files in your SPM installation and not any other toolbox.

If all of these things come up good, please let me know and I'll look into this further.

Ben