On Fri, Mar 25, 2011 at 11:41:52AM +0000, John Ashburner wrote:
> If you check the initial alignment of the images using Check Reg, are
> they almost aligned?
They are indeed.
> If the relative displacement or rotation is too large, then there could
> be instabilities.
Absolutely, I understand that. Why leaves me puzzle is that fact that it
works from the GUI and fails from the script. Both behaviors are very
reproducible. I am trying to understand where the difference comes from.