diff --git a/install/steps/3-requirements.php b/install/steps/3-requirements.php
index 659e3036..65281248 100644
--- a/install/steps/3-requirements.php
+++ b/install/steps/3-requirements.php
@@ -2,10 +2,15 @@
 defined('MYAAC') or die('Direct access not allowed!');
 
 // configuration
-$dirs_required = [
+$dirs_required_writable = [
 	'system/logs',
 	'system/cache',
 ];
+
+$dirs_required = [
+	'tools/ext' => $locale['step_requirements_folder_not_exists_tools_ext'],
+];
+
 $dirs_optional = [
 	GUILD_IMAGES_DIR => $locale['step_requirements_warning_images_guilds'],
 	GALLERY_DIR => $locale['step_requirements_warning_images_gallery'],
@@ -18,6 +23,7 @@ $extensions_optional = [
 	'gd' => $locale['step_requirements_warning_player_signatures'],
 	'zip' => $locale['step_requirements_warning_install_plugins'],
 ];
+
 /*
  *
  * @param string $name
@@ -41,7 +47,7 @@ $failed = false;
 // start validating
 version_check($locale['step_requirements_php_version'], (PHP_VERSION_ID >= 50500), PHP_VERSION);
 
-foreach ($dirs_required as $value)
+foreach ($dirs_required_writable as $value)
 {
 	$is_writable = is_writable(BASE . $value) && (MYAAC_OS != 'WINDOWS' || win_is_writable(BASE . $value));
 	version_check($locale['step_requirements_write_perms'] . ': ' . $value, $is_writable);
@@ -52,6 +58,12 @@ foreach ($dirs_optional as $dir => $errorMsg) {
 	version_check($locale['step_requirements_write_perms'] . ': ' . $dir, $is_writable, $is_writable ? '' : $errorMsg, true);
 }
 
+foreach ($dirs_required as $dir => $errorMsg)
+{
+	$exists = is_dir(BASE . $dir);
+	version_check($locale['step_requirements_folder_exists'] . ': ' . $dir, $exists, $exists ? '' : $errorMsg);
+}
+
 $ini_register_globals = ini_get_bool('register_globals');
 version_check('register_long_arrays', !$ini_register_globals, $ini_register_globals ? $locale['on'] : $locale['off']);
 
@@ -78,4 +90,3 @@ if($failed) {
 }
 
 echo '</div>';
-?>
diff --git a/system/locale/de/install.php b/system/locale/de/install.php
index 85be3b16..ad354609 100644
--- a/system/locale/de/install.php
+++ b/system/locale/de/install.php
@@ -36,6 +36,10 @@ $locale['step_requirements'] = 'Anforderungen';
 $locale['step_requirements_title'] = 'Anforderungen überprüfen';
 $locale['step_requirements_php_version'] = 'PHP Version';
 $locale['step_requirements_write_perms'] = 'Schreibberechtigungen';
+$locale['step_requirements_folder_exists'] = 'Ordner ist vorhanden';
+$locale['step_requirements_folder_not_exists_tools_ext'] = 'NPM Package Manager wird verwendet für externe JavaScript/CSS Bibliotheken.'
+	. ' Es sollte via Command Line installiert werden: <a href="https://docs.npmjs.com/downloading-and-installing-node-js-and-npm">https://docs.npmjs.com/downloading-and-installing-node-js-and-npm</a>'
+	. ' Nachdem das Tool installiert wurde, folgende Befehl sollte ausgeführt in dem Hauptordner des MyAACs: "npm install".';
 $locale['step_requirements_failed'] = 'Die Installation wird deaktiviert, bis diese Anforderungen erfüllt sind.</b><br/>Für weitere Informationen siehe <b>README</b> Datei.';
 $locale['step_requirements_extension'] = '$EXTENSION$ PHP Erweiterung';
 
diff --git a/system/locale/en/install.php b/system/locale/en/install.php
index 3de85896..e25537c9 100644
--- a/system/locale/en/install.php
+++ b/system/locale/en/install.php
@@ -36,6 +36,10 @@ $locale['step_requirements'] = 'Requirements';
 $locale['step_requirements_title'] = 'Requirements check';
 $locale['step_requirements_php_version'] = 'PHP Version';
 $locale['step_requirements_write_perms'] = 'Write permissions';
+$locale['step_requirements_folder_exists'] = 'Directory exists';
+$locale['step_requirements_folder_not_exists_tools_ext'] = 'NPM Package Manager is used for external JavaScript/CSS libraries.'
+	. ' You need to install it through Command Line: <a href="https://docs.npmjs.com/downloading-and-installing-node-js-and-npm">https://docs.npmjs.com/downloading-and-installing-node-js-and-npm</a>'
+	. ' When you done with installing that tool, execute: "npm install" in the main MyAAC folder.';
 $locale['step_requirements_failed'] = 'Installation will be disabled until these requirements will be passed.</b><br/>For more informations see <b>README</b> file.';
 $locale['step_requirements_extension'] = '$EXTENSION$ PHP extension';
 $locale['step_requirements_warning_images_guilds'] = 'Guild logo upload will not work';
diff --git a/system/locale/pl/install.php b/system/locale/pl/install.php
index 1afb2ddd..22204adf 100644
--- a/system/locale/pl/install.php
+++ b/system/locale/pl/install.php
@@ -36,6 +36,10 @@ $locale['step_requirements'] = 'Wymagania';
 $locale['step_requirements_title'] = 'Sprawdzanie wymagań';
 $locale['step_requirements_php_version'] = 'Wersja PHP';
 $locale['step_requirements_write_perms'] = 'Uprawnienia do zapisu';
+$locale['step_requirements_folder_exists'] = 'Folder istnieje';
+$locale['step_requirements_folder_not_exists_tools_ext'] = 'Manadżer Pakietów NPM jest używany do zewnętrznych bibliotek JavaScript/CSS.'
+	. ' Trzeba go zainstalować poprzez wiersz poleceń: <a href="https://docs.npmjs.com/downloading-and-installing-node-js-and-npm">https://docs.npmjs.com/downloading-and-installing-node-js-and-npm</a>'
+	. ' Po instalacji narzędzia, wywołaj następujące polecenie w głownym katalogu MyAAC: "npm install".';
 $locale['step_requirements_failed'] = 'Instalacja zostanie zablokowana dopóki te wymagania nie zostaną spełnione.</b><br/>Po więcej informacji zasięgnij do pliku <b>README</b>.';
 $locale['step_requirements_extension'] = 'Rozszerzenie PHP - $EXTENSION$';
 $locale['step_requirements_warning_images_guilds'] = 'Nie będzie możliwości uploadu obrazków gildii';