When running a bunwarpj registration, if the registration fails to complete for whatever reason, fiji locks up on the 'stop' symbol and I must restart fiji before I can continue to work.  Included is the code that causes the crash.  The data I'm loading is of length 256^3 uint32 (I suspect the bit depth is what's causing the registartion to fail, but that isn't my concern).

Thanks,

Stan Kruger

// Macro to perform 3D registration in a 2D Stack method

airdir = getDirectory("Choose a Target Directory");
airlist = getFileList(airdir);
oxydir = getDirectory("Choose a Source Directory");
oxylist = getFileList(oxydir);

for (i=0; i<256; i++ ) {
	ofnew = i*65536*4; //256 x 256 * bytedepth
	print(i);
	run("Raw...", "open=[" + airdir + airlist[0] + "] image=[32-bit Unsigned] width=256 height=256 offset=ofnew number=1 gap=0 little-endian");
	rename("air");
	run("Raw...", "open=[" + oxydir + oxylist[0] + "] image=[32-bit Unsigned] width=256 height=256 offset=ofnew number=1 gap=0 little-endian");
	rename("oxy");
	run("Extract SIFT Correspondences", "source_image=oxy target_image=air initial_gaussian_blur=1.60 steps_per_scale_octave=3 minimum_image_size=64 maximum_image_size=1024 feature_descriptor_size=4 feature_descriptor_orientation_bins=8 closest/next_closest_ratio=0.92 filter maximal_alignment_error=25 minimal_inlier_ratio=0.05 minimal_number_of_inliers=7 expected_transformation=Rigid");
	run("bUnwarpJ", "source_image=oxy target_image=air registration=Mono image_subsample_factor=0 initial_deformation=[Very Fine] final_deformation=[Super Fine] divergence_weight=0.5 curl_weight=0.5 landmark_weight=1 image_weight=1 consistency_weight=10 stop_threshold=0.01");

	selectWindow("air");
	close();
	selectWindow("oxy");
	close();

	selectWindow("Registered Source Image");
	run("Stack to Images");
	selectWindow("Warped Source Mask");
	close();

	if (i == 0) {
		selectWindow("Target Image");
		rename("airstack");
		selectWindow("Registered Source Image");
		rename("oxystack");
	} else { 
		run("Concatenate...", "  title=airstack image1=airstack            image2=[Target Image]  image3=[-- None --]");
		run("Concatenate...", "  title=oxystack image1=oxystack image2=[Registered Source Image]  image3=[-- None --]");
	}
}

selectWindow("airstack");
saveAs("Raw Data", "\\\\mpfsv\\Home\\sjkruger\\My Documents\\work\\O2\\SS2\\S05_1\\testreg_UTE\\reg\\air_reg.dat");
selectWindow("oxystack");
saveAs("Raw Data", "\\\\mpfsv\\Home\\sjkruger\\My Documents\\work\\O2\\SS2\\S05_1\\testreg_UTE\\reg\\oxy_reg.dat");