Hi Freesurfers,

I am having trouble with one subject's PVC (we process many cases and never had this issue before). 

When running mri_gtmpvc I get a 'Failed tissue type check' error. 

I've seen that other people have reported similar errors in the past, but I haven't found any advice on how to trouble-shoot this. 

We have longitudinal PET data with two tracers for this subject, so it is very important for us to get this fixed. Any advice?  

Thank you,

Cristina