mri_ca_register: GCAMwrite(transforms/talairach.m3z) failed

ERROR: mri_ca_register with non-zero status 252

but continuing despite the error

#--------------------------------------

#@# CA Reg Inv Thu Nov 24 05:15:42 EST 2011

/home/virtualuser/freesurfer/subjects/Petrollini2/mri

 

 mri_ca_register -invert-and-save transforms/talairach.m3z

 

Loading, Inverting, Saving, Exiting ...

Reading transforms/talairach.m3z

ERROR: cannot find or read transforms/talairach.m3z

ERROR: mri_ca_register with non-zero status 0

Linux FreeSurfer 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:57:59 UTC 2009 i686 GNU/Linux

 

recon-all -s Petrollini2 exited with ERRORS at Thu Nov 24 05:15:43 EST 2011

 

To report a problem, see http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting

I'm working with a virtual machine on a 32 bit computer with 4GB of RAM(2-core Intel processor 2.00 GHz). I raised the ram dedicated to the virtual machine to 1,5 GB: this is the max value permitted before the selecting bar of the virtual box changes from green to red (is it sufficent?)

I have free space for data. 

Can you help me in solving this problem?

Thanks

Lorenzo Busti