500 internal error with RewriteEngine on .htaccess on localhost with wamp

I'm having a problem with a script. It doen't works with a htaccess file that is needed to work. Here's what the htaccess contains. I'm trying to install it on a wamp localhost. The code is:

#AddType x-mapp-php5 .php
#AddHandler x-mapp-php5 .php

RewriteEngine ON
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .* index.php/$0 [PT,L]
#RewriteRule ^(.*)$ /index.php?q=$1 [L,QSA]

Options All -Indexes

If I remove this it works:

RewriteEngine ON
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .* index.php/$0 [PT,L]
#RewriteRule ^(.*)$ /index.php?q=$1 [L,QSA]

But this way the script loads but every page show error 404. Is there a way to resolve this problem??