Сайт и админка не работают при смене htacces.txt на .htacces!!!! - OpenSEF

--- Initializing SEF resolver: sefresolver
'/index.php?option=com_content&task=view&id=12&Itemid=73' => '/index.php?option=com_content&task=view&id=12&Itemid=73' (relative site URL)
--- Resolving: '/index.php?option=com_content&task=view&id=12&Itemid=73'
'/index.php' is an internal Joomla URL
'/index.php?option=com_content&task=view&id=12&Itemid=73' is a Joomla content URL
'/index.php?option=com_content&task=view&id=12&Itemid=73' => '/proekty/proekty/yasnoozernoe.html' (reverse alias lookup)
'/index.php?option=com_content&task=view&id=12&Itemid=73' => 'http://www.kapitalinvest.com.ua/proekty/proekty/yasnoozernoe.html' (enforcing canonical URLs)
--- Redirecting to: http://www.kapitalinvest.com.ua/proekty/proekty/yasnoozernoe.html

#  mod_rewrite in use

RewriteEngine On


#  Uncomment following line if your webserver's URL
#  is not directly related to physical file paths.
#  Update Your Joomla/MamboDirectory (just / for root)

# RewriteBase /


########## Begin - Joomla! core SEF Section
############# Use this section if using ONLY Joomla! core SEF
## ALL (RewriteCond) lines in this section are only required if you actually
## have directories named 'content' or 'component' on your server
## If you do not have directories with these names, comment them out.
#
#RewriteCond %{REQUEST_FILENAME} !-f
#RewriteCond %{REQUEST_FILENAME} !-d
#RewriteCond %{REQUEST_URI} ^(/component/option,com) [NC,OR] 		##optional - see notes##
#RewriteCond %{REQUEST_URI} (/|\.htm|\.php|\.html|/[^.]*)$  [NC]
#RewriteRule ^(content/|component/) index.php
#
########## End - Joomla! core SEF Section



########## Begin - 3rd Party SEF Section
############# Use this section if you are using a 3rd party (Non Joomla! core) SEF extension - e.g. OpenSEF, 404_SEF, 404SEFx, SEF Advance, etc
#
RewriteCond %{REQUEST_URI} ^(/component/option,com) [NC,OR] 		##optional - see notes##
RewriteCond %{REQUEST_URI} (/|\.htm|\.php|\.html|/[^.]*)$  [NC]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule (.*) index.php
#
########## End - 3rd Party SEF Section

Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, kig@iptelecom.net.ua and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

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Apache/1.3.34 Server at www.kapitalinvest.com.ua Port 80