[winGRASS] r.in.gdal error

[Matthew Perry]

Hey folks,
   I just installed Cygwin/grass 6.0 and am unable to
import a tiff using r.in.gdal. Here is the process:

GRASS 6.0.cvs:~/grassdata > r.in.gdal
input=/home/mp28/data/srtm_12_04.tif output=srtm
assertion "codecs == NULL" failed: file
"/usr/src/tiff/tiff-3.7.0beta2/libtiff/tif_compress.c",
line 258
Aborted (core dumped)

I have found a few others who asked this same question
but, alas, google revealed no answers. 

Please help me out here... is this a bug or is my
environment not setup correctly?

Matt Perry
Humboldt State University
Advanced Spatial Analysis Facility