You shouldn't enable the choice I implied above
In htaccess
find:
#uncomment if you use beautifying url actions
#RewriteCond %{REQUEST_METHOD} =GET
#RewriteCond %{QUERY_STRING} ^action=(.*)$
#RewriteRule ^(.*)$ seo4smf-redirect.php?a=%1 [R=301,L]
replace with ;
#uncomment if you use beautifying url actions
RewriteCond %{REQUEST_METHOD} =GET
RewriteCond %{QUERY_STRING} ^action=(.*)$
RewriteRule ^(.*)$ seo4smf-redirect.php?a=%1 [R=301,L]
find again ;
#New action Url's - uncomment if you use beautifying url actions
#RewriteRule ^(.*)\.html(.*)$ index.php?dummy=1;action=$1;$2 [L]
#RewriteRule ^(.*)\.html$ index.php?dummy=1;action=$1 [L]
change with:
#New action Url's - uncomment if you use beautifying url actions
RewriteRule ^(.*)\.html(.*)$ index.php?dummy=1;action=$1;$2 [L]
RewriteRule ^(.*)\.html$ index.php?dummy=1;action=$1 [L]