I'm putting together the rest of the pano - Hugin seems to run out of memory on it. Only 38 images!
..d
How much ram do you have and which OS do you run Hugin in?
A couple of things to check - on the stitching tab, for in the options for Remapper Nona select "Save cropped images".
Also, when stitching try and crop out any blank space from using the preview. Hugin 2010.0.0 has an autocrop feature in the fast preview which cuts out all the blank space, this will mean less memory usage when it comes to stitching.
Hope this helps.