[GRASS-user] Problem using r.in.wms with saxonys mapserver

[gweigi71]

Hello,

I try to get some maps from saxonys new wms- service:
http://www.landesvermessung.sachsen.de/ias/basiskarte/service/register
(german only)
I use this with grass 6.2.2:

r.in.wms -c output=tk10
mapserver=http://www.landesvermessung.sachsen.de/ias/basiskarte/service/SRVTKFREE/WMSFREE_TK/wmsservice? 

layers=tk10w,tk10g,tk10i,tk10v srs=EPSG:31468 format=png
wmsquery=SERVICE=WMS&version=1.1.1 maxcols=1024 maxrows=1024
folder=/home/wg/toposachs {wgetoptions=-c -t 5 --user-agent=MSIE5.5}
method=nearest v=1

... and I get this:

ERROR 4: `/home/wg/Documents/grass6/wms_download/tk10__0.png' not
recognised as a supported file format.

ERROR: r.in.gdalwarp: gdalwarp failure.

Also there are only empty png's in the download folder (and some other
files). I think it has something to do with scalehint- restrictions.
Maybe my region- settings are wrong:

projection: 99 (Transverse Mercator)
zone:       0
datum:      potsdam
ellipsoid:  a=6377397.155 es=0.006674372231802145
north:      5666684.25180855
south:      5665398.55006475
west:       4683933.19530855
east:       4685477.48200981
nsres:      0.99976807
ewres:      1.00018569
rows:       1286
cols:       1544
cells:      1985584

Can somebody give me a hint?