deformable registration with the two test images takes ~4.8 GB ram on my machine. This will lead certainly to an out of memory exception on 32 bit machines.

Test with the 32 Bit installer (rev 20269):

load the two test images from point based registration

select them:
fixed image: venous
moving image: arterial

Click on "Calculate Transform". --> Error Message:

An error occurred. You should save all data and quit the program to prevent possible data loss.
See the error log for details.

..\..\..\..\source\ITK3160\Code\Common\itkDataObject.cxx:397:

Requested region is (at least partially) outside the largest possible region.

next test:
switch fixed and moving image, click on "Calculate Transform". -->
Algorithm runs for a while, then a Messagebox appears : Failed to allocate memory. After clicking on okay, the application crashes.

needs to be reassigned to someone with a 32 Bit debug version.

I will have a look

Seems to be a problem if the fixed image covers a bigger region than the moving image. An exception is then thrown in itk::DataObject::PropagateRequestedRegion().
As a quick workaround one could check if the fixed image is bigger in size than the moving image

[SVN revision 20383]
FIX (#3020): added workaround to check if fixed image is bigger than moving image

Daniel S.: perhaps we can have a look at this problem when you're back to present a more sophisticated sooution.

Merging "applicazion modules" component with "ExtApp plugins"