problem with Gnu grep

[Frank Butler]

Hello!
 
When I try to run grep on standard input, I get the following:
 
>grep teststring
grep: (standard input): Not enough space
 
I don't know if this is a bug, or perhaps I need to change something in my
environment to get it to work?
 
I checked through the Gnu Grep manual:
http://www.gnu.org/software/grep/doc/grep.html
but didn't find anything in there on this error message.
 
I am running on Windows XP SP2 with all current Windows Updates.
 
Version information:
>grep -V
grep (GNU grep) 2.5.1
 
Thanks for your help!