HTTP Error 500 (Internal Server Error)

Hello All

I am using vbSeo plugin in my forum. I upgrade my vbSeo 3.5 to vbSeo 3.6 with the help of read me file but after upgrade and enable the plugin my site does not working.

Please help me to short out this issue.

Here is my htaccess code

Code:

# Comment the following line (add '#' at the beginning)
# to disable mod_rewrite functions.
# Please note: you still need to disable the hack in
# the vBSEO control panel to stop url rewrites.
RewriteEngine On


# Some servers require the Rewritebase directive to be
# enabled (remove '#' at the beginning to activate)
# Please note: when enabled, you must include the path
# to your root vB folder (i.e. RewriteBase /forums/)
#RewriteBase /


#RewriteCond %{HTTP_HOST} !^www\.mysite\.com
#RewriteRule (.*) http://www.mysite.com/forum/$1 [L,R=301]


RewriteRule ^((urllist|sitemap_).*\.(xml|txt)(\.gz)?)$ vbseo_sitemap/vbseo_getsitemap.php?sitemap=$1 [L]


RewriteCond %{REQUEST_URI} !(admincp/|modcp/|cron|vbseo_sitemap|advancedsearch.php)
RewriteRule ^((archive/)?(.*\.php(/.*)?))$ vbseo.php [L,QSA]




#RewriteRule ^search/(.*)(^/)*(/page)?(\-)?(.*)(^.)*\.html$ advancedsearch.php?keyword=$1&page=$4&2=$2&3=$3
#RewriteRule ^search-user/(.*)(^/)*(/page)?(\-)?(.*)(^.)*\.html$ advancedsearch.php?userid=$1&page=$4&2=$2&3=$3


#RewriteRule ^([a-zA-Z0-9\-]+)\-([0-9]+)\/([a-zA-Z0-9\-]+)\-([0-9]+)\/$ showthread.php?t=$4&title=$3




RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !/(admincp/|modcp/|clientscript/|cpstyles/|images/|advancedsearch.php)
RewriteRule ^(.+)$ vbseo.php [L,QSA]






#discuss/search/keyword1-keyword2-x.html

Please help me guys to short out this issue.

Thanks

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