4.1beta under IRIX 3.X: questions

I've compiled GRASS 4.1beta on a Silicon Graphics machine
running version 3 of IRIX. Everything makes just fine,
and just about everything runs fine, but two problems
I can't track down:

1) s.surf.tps starts off just fine, then core dumps
without warning.

2) SG3d works wonderfully, except that the "new vect path"
panel causes a core dump. Again, no warning, no
diagnostics.

I have started (gently) poking around for the problem, but
have no clues yet. Has any one seen anything similar?

Thanks in advance.

Neel Smith
nsmith@polar.bowdoin.edu