Hi everyone, I have a quick question but an important one. We are working on a 5 year study involving well over 1000 scans. Processing of these patients is primarily done using a cluster machine loaded with freesurfer version x86_64-redhat-linux-gnu-dev4-20080904. However, sometimes it is useful to be able to do certain preliminary steps of the processing locally in our lab which is full of Macs running the 4.0.5 version of freesurfer. Also, because of the long nature of the study in the past these computers have been loaded with 4.0.0 4.0.1 4.0.2 etc. Anyway, my question is that although all of the recon-all processing has been done on the cluster machine some scans have undergone mri_convert locally in the lab to create a 001.mgz file which is then fed to the cluster for further processing. Would there be any concern in this? I know the version of mri_convert for freesurfer version 4.0.5 is mri_convert 1.146.2.3 and the one on our cluster machine is 1.146.2.1, but I am not sure what the versions of mri_convert were that were used in 4.0.0 4.0.1 etc. Anyway, any reason for concern in having some variability only in the version invoked to create the 001.mgz file using mri_convert?