cannot run 'getWMSImage.sh -o katrinaCounties.tiff' -m UScounties -t -97 20 -77 47'

I am a new user of VAPOR. I am learning according to the Hurricane Katrina Tutorial. Now I meet a roblem when doing Step 3. I want to obtain a geo-referenced image and I type the command:
etWMSImage.sh -o katrinaCounties.tiff' -m UScounties -t -97 20 -77 47
But then I did not get the image of US, these words displayed on the screen:
[root@LSQ katrina]# getWMSImage.sh -o katrinaCounties.tiff -m UScounties -t -97 20 -77 47
Extent: -97,20 (LL) -77,47 (UR)
Image resolution: 1024 X 768
Image filename: katrinaCounties.tiff
Image layer: ATLAS_COUNTIES_2000,ATLAS_STATES
WMS URL: http://imsref.cr.usgs.gov:80/wmsconnector/com.esri.wms.Esrimap/USGS_EDC_...
curl -w HTTP_RESPONSE:%{http_code}\n -L -o tmpImage http://imsref.cr.usgs.gov:80/wmsconnector/com.esri.wms.Esrimap/USGS_EDC_...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 354 100 354 0 0 231 0 0:00:01 0:00:01 --:--:-- 265
HTTP_RESPONSE:200
<ServiceExceptionReport version="1.1.1">
<ServiceException code="getMap">
</ServiceException>
</ServiceExceptionReport>
Received WMS ServiceException:
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<ServiceExceptionReport version="1.1.1">
<ServiceException code="getMap">
java.io.FileNotFoundException: D:\OUTPUT\ArcIMS\Capabilities\wms\localhost-5300\USGS_EDC_National_Atlas\capabilities_1_1_0.xml (The system cannot find the file specified)
</ServiceException>
</ServiceExceptionReport>
How can I deal with it?
Thank you.
Siqi Li