Problem with .htaccess?

I moved my developing site from a Windows based pc to a linux based pc and my kirby site on localhost does not work when I access to pages that have a related controller file (the browser status bar says “waiting…” ) . If I rename the controller file with another fancy name I can access to page and related template. I have uploaded the site on my shared hosting provider and all it’s ok!!!
My vhost configuration is:

<Directory /home/gmz/Dropbox/cap.it/SITO>
    Options FollowSymLinks
    AllowOverride All
    Order allow,deny    
    Allow from all
    Require all granted
</Directory>

My .htaccess is:

<IfModule mod_rewrite.c>

# enable awesome urls. i.e.:
# http://yourdomain.com/about-us/team
RewriteEngine on

# make sure to set the RewriteBase correctly
# if you are running the site in a subfolder.
# Otherwise links or the entire site will break.
#
# If your homepage is http://yourdomain.com/mysite
# Set the RewriteBase to:
#
# RewriteBase /mysite

RewriteBase /

# block text files in the content folder from being accessed directly
RewriteRule ^content/(.*)\.(txt|md|mdown)$ error [R=301,L]

# block all files in the site folder from being accessed directly
RewriteRule ^site/(.*) error [R=301,L]

# block all files in the kirby folder from being accessed directly
RewriteRule ^kirby/(.*) error [R=301,L]

# make panel links work
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^panel/(.*) panel/index.php [L]

# make site links work
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*) index.php [L]

</IfModule>

# Additional recommended values
# Remove comments for those you want to use.
#
 AddDefaultCharset UTF-8
#
php_flag short_open_tag on

Suggestions? Please help me!

Also router don’t work!!!
I have also create a fresh installation with this conf

<Directory /var/www/>
     Options Indexes FollowSymLinks
        AllowOverride All
        Require all granted
</Directory>

Same problem!
Can someone please help me?

What Apache version are you running on the linux system?

thanks a lot @texnixe, I just solved!
It was a database credential configuration problem in my class to access new Mysql server on linux.
The question is:
why error in

return $db = new Database(array(
          'type'     => 'mysql',
          'host'     => c::get('db.host'),
          'database' => c::get('db.database'),
          'user'     => c::get('db.user'),
          'password' => c::get('db.password')
        ));  

doesn’t show any warning? Timeout problem?
Is it possible to set a max connection timeout?
thanks in advance