s.surf.tps Problems

New Year
         New Problems.

I'm running s.surf.tps interactively. The following are
entered in.
  input site file
  elavation file name
  
  The other questions are left blank.

The program runs until it says 100% complete and then gives
the following error.

  ERROR: G_calloc: out of memory.

What is causing this error? How can I fix it?

Kym M. Lenkus
Davidson Laboratory