I am trying to download the 1:250,000 DEM files on a Win NT 4.0 machine. I
am trying to use WINzip to extract them. I have tried the compressed and
uncompressed files. When I try to extract it, it asks for a file extension
for the file. I tried giving it a zip extension and the message is "Cannot
open file. It does not appear to be a valid archive." I have tried
several files with the same message, so I know it isn't the download.
Trying to open the uncompressed gz file with winzip give me the message
"Error reading header after processing 0 entries"
What is the trick here? I tried going to gzip.org, the FAQ's said if you
are using a Windows machine to use Winzip to extract a gz file.
I have no trouble downloading and extracting the 1:24,000 files. But the
1:250,000 files have me stymied.
Thank you for any help you can give me.
Regards,
Glenn Nevill
[EMAIL PROTECTED]
415 768-7340
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