That test file works fine on my local 32-bit machine (and I have not re-rsync'd from JAC since Tim updated NDG/NDF etc.
Unfortunately I just realized that I destroyed my original huge file so I'll have to re-make it (it was diverging, so I decided to run a fixed number of iterations in order to make progress with this paper draft... sigh). It'll probably take a few hours, and then I'll send it to Hawai'i from Vancouver...
Can you try doing:
% ndfcopy m17_bright_extended_half2_600.more.smurf.itermaps.CH00I001 map1
(a tiny NDF with 900 tiny NDF extensions), and let me know if you see
the same problem with it? It works OK on "acsis" at JAC. If the
problem does not occur with this tiny ndf, the next step is probably
for you to copy your huge NDF to JAC so that I can look at what is
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