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Dear Freesurfer experts,

I am using bbregister to register my functional template image into T1 image. The bbregister is running fine. But when I tried to view registration using tkregisterfv, the window opened and closed quickly with an error message: 

Warning: Transformation can only apply to volumes for now. If your data includes ROI/Surface/Way Points, please do not use this feature yet.
INFO: This REGISTER_DAT transform is valid only for volumes between  COR types with c_(r,a,s) = 0.
LTAchangeType: src geometry must be valid
terminate called after throwing an instance of 'int'
Abort (core dumped).

My command:

bbregister --s subj_ID --mov template.nii --reg bbr_template_T1.reg --bold --init-fsl
tkregisterfv --mov template.nii --reg bbr_template_T1.reg --surfs

Can anyone help me with this? Thank you so much!
VY