The requested URL /v/picture.JPG.html was not found on this server.

I've been trying to get gallery embedded into my wordpress site (www.cjupin.com). Here is the error message:

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The requested URL /v/anita.JPG.html was not found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

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Here is my .htaccess file:

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# BEGIN Url Rewrite section
# (Automatically generated. Do not edit this section)
<IfModule mod_rewrite.c>
RewriteEngine On

RewriteBase /gallery/

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d [OR]
RewriteCond %{REQUEST_FILENAME} gallery\_remote2\.php
RewriteCond %{REQUEST_FILENAME} !main\.php
RewriteRule . - [L]

RewriteCond %{THE_REQUEST} \ /gallery/admin/(\?.|\ .)
RewriteCond %{REQUEST_FILENAME} !main\.php
RewriteRule . /gallery/main.php?g2_view=core.SiteAdmin [QSA,L]

RewriteCond %{THE_REQUEST} \ /gallery/v/(\?.|\ .)
RewriteCond %{REQUEST_FILENAME} !main\.php
RewriteRule . /gallery/main.php?g2_view=core.ShowItem [QSA,L]

RewriteCond %{THE_REQUEST} \ /gallery/d/([0-9]+)-([0-9]+)/([^\/]+)(\?.|\ .)
RewriteCond %{REQUEST_FILENAME} !main\.php
RewriteRule . /gallery/main.php?g2_view=core.DownloadItem&g2_itemId=%1&g2_serialNumber=%2 [QSA,L]

RewriteCond %{THE_REQUEST} \ /gallery/v/([^?]+)(\?.|\ .)
RewriteCond %{REQUEST_FILENAME} !main\.php
RewriteRule . /gallery/main.php?g2_view=core.ShowItem&g2_path=%1 [QSA,L]

</IfModule>

# END Url Rewrite section

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Gallery works when I go to it directly:

http://www.cjupin.com/gallery/main.php

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I reran the config wizard and everything checked out ok...settings validated...

any help/suggestions would be great!!!