Hi Isaac,

Basically, your dataset mask is so small that cluster simulation is
not stable. You are getting tons of warning messages which are
being accumulated before being printed out (so that they appear
at the end, I expect, so that one actually sees them).

In the case of -LOTS (and -niml implies it, apparently), there are
many pthr values to simulate at, and each one generates many
warnings.

With so many warnings the internal warning buffer limit is
eventually exceeded.

Consider specifying your own -pthr option, and put it AFTER -niml,
because -niml will stick in the long list again.

Of course, you will still get lots of warnings, but at least you will
be able to see them all.

- rick