Hi rick,
yes, it concern only one slice of the EPI image and one slice of the anatomical image that seems well align but with some difference due to the EPI sequence.
I can send these images to you if you want?
I just repeated the error this week on other animals and it seems to appear always in the last axial slice of the brain on which their is probably not enough similar voxels. However, I do not understand why it has works for the other animals and how to fix this.
Thank you and Happy New Year!!!
Clement