نصب مود ها در دایرکت ادمین

[amin0256]

سلام و تشکر
ای کد htaccess من هست :

	# supress php errors
	AddDefaultCharset UTF-8
	php_flag display_startup_errors off
	php_flag display_errors off
	php_flag html_errors off
	php_value docref_root 0
	php_value docref_ext 0
	AddType application/x-httpd-php .html .htm
	php_flag display_startup_errors on
	php_flag display_errors on
	# BEGIN Expire headers
	<ifModule mod_expires.c>
	ExpiresActive On
	ExpiresDefault "access plus 1 month"
	ExpiresByType image/x-icon "access plus 1 year"
	ExpiresByType image/jpeg "access plus 1 month"
	ExpiresByType image/png "access plus 1 month"
	ExpiresByType image/gif "access plus 1 month"
	ExpiresByType image/jpg "access plus 1 month"
	ExpiresByType application/x-shockwave-flash "access plus 1 month"
	ExpiresByType text/css "access plus 1 month"
	ExpiresByType text/javascript "access plus 1 year"
	ExpiresByType application/javascript "access plus 1 year"
	ExpiresByType application/x-javascript "access plus 1 year"
	ExpiresByType text/html "access plus 0 seconds"
	ExpiresByType application/xhtml+xml "access plus 600 seconds"
	ExpiresByType font/ttf "access plus 1 year"
	ExpiresByType font/woff "access plus 1 year"
	</ifModule>
	# END Expire headers
	# BEGIN Cache-Control Headers
	<ifModule mod_headers.c>
	<filesMatch "\.(ico|jpe?g|png|gif|swf|woff|ttf)$">
	Header set Cache-Control "max-age=2592000, public"
	</filesMatch>
	<filesMatch "\.(css)$">
	Header set Cache-Control "max-age=2592000, public"
	</filesMatch>
	<filesMatch "\.(js)$">
	Header set Cache-Control "max-age=2592000, private"
	</filesMatch>
	<filesMatch "\.(x?html?|php)$">
	Header set Cache-Control "no-cache, no-store, must-revalidate"
	</filesMatch>
	</ifModule>
	# END Cache-Control Headers
	# BEGIN Turn ETags Off
	<ifModule mod_headers.c>
	Header unset ETag
	</ifModule>
	FileETag None
	# END Turn ETags Off
	# BEGIN Remove Last-Modified Header
	<ifModule mod_headers.c>
	Header unset Last-Modified
	</ifModule>
	# END Remove Last-Modified Header
	# BEGIN Compress text files
	<ifModule mod_deflate.c>
	<filesMatch "\.(css|js|x?html?|php|woff|ttf|png|jpg|gif)$" >
	SetOutputFilter DEFLATE
	</filesMatch>
	</ifModule>
	# END Compress text files

اما وقتی می زارمش ارور 500 می ده چکارش کنم؟
تشکر.