vim-2 data in Pyrcca missing xfms

Hello,

I am working with the vim-2 data in the pyrcca neuroimaging example. The obtained data are:

Functional data:
VoxelResponses_subject1.mat
VoxelResponses_subject2.mat
VoxelResponses_subject3.mat

Anatomical data:
S1_anatomy.nii
S2_anatomy.nii
S3_anatomy.nii

When i am running the example code i get an error when it tries to obtain the mask.

Mask not found, generating...
Traceback (most recent call last):
  File "/home/c10530274/untitled.py", line 24, in <module>
    mask = cortex.db.get_mask(subjects[subj], xfms[subj], type = 'thick')
  File "/home/c10530274/pycortex/cortex/database.py", line 526, in get_mask
    mask = get_cortical_mask(subject, xfmname, type)
  File "/home/c10530274/pycortex/cortex/utils.py", line 99, in get_cortical_mask
    dist, idx = get_vox_dist(subject, xfmname)
  File "/home/c10530274/pycortex/cortex/utils.py", line 133, in get_vox_dist
    xfm = db.get_xfm(subject, xfmname)
  File "/home/c10530274/pycortex/cortex/database.py", line 433, in get_xfm
    xfmdict = json.load(open(fname))
IOError: [Errno 2] No such file or directory: u'/home/c10530274/pycortex/filestore/db/S1/transforms/S1_xfm/matrices.xfm'
[Finished in 1.6s with exit code 1]

It appears that the subjects's corresponding xfm files are needed to succesfully get the mask.

./db/S1 map is  generated during pycortex installation. i tried to delete this to check if the xfm for subject s1 was generated but it did not.
Am i missing something? Is there a way to obtain the xfms file?
I attached the used code.

Greetings,

Dirk