help w/ dem extract

[Morris Trimmer]

I can use some help.
  I've been trying to extract some DEM data from a file and I keep 
getting errors.  The data comes from a USGS tape, was downloaded 
onto a prime and ftp'd to my home directory.  I have been trying to 
use m.dem.extract and after getting the reagion info and first header 
for the quad, I get the fallowing  problem:
 For the first 53 files I get 5 messages saying "Warning unexpectid 
C-type record encountered (see GRASS4.1 manual for detailes) Trying 
to recover . . ."
  I then get the same message with "OK! Recovered!" at the  end.
  Then I see header type info fallowed by "(outside current 
geographical region)"
  This this all flashes by very quickly for the 53 'files'.
  It then reads 'end of records, Reading profile 3 of 386, Error:  '
  Next I get the grass prompt.

If I try to start m.dem.extract from 'file 54' I get exact same things 
except with no header type info and 'outside current geo. region' 
message.
  There seems to be no output.
  Any ideas?   Thanks!!!
Morris Trimmer
Washington & Lee University
Lexington, VA. 24450
trimmer at wlu.edu
(703) 463-8846