diff --git a/application/Espo/Core/Application.php b/application/Espo/Core/Application.php
index eff2672d6f..daaeb9f98a 100644
--- a/application/Espo/Core/Application.php
+++ b/application/Espo/Core/Application.php
@@ -98,13 +98,18 @@ class Application
 		$cronManager->run();
     }
 
-    public function isInstalled()
+    public function isInstalled($useRedirect = true)
     {
-    	$configFile = $this->getContainer()->get('config')->get('configPath');
-		if (!file_exists($configFile)) {
+    	$configFile = $this->getContainer()->get('config')->get('configPath');    	
+
+    	$result = file_exists($configFile) ? true : false;
+
+		if ($useRedirect && !$result) {
 			header("Location: install/");
 			exit;
 		}
+
+		return $result;
     }
     
 	protected function routeHooks()
diff --git a/application/Espo/Core/Utils/Config.php b/application/Espo/Core/Utils/Config.php
index 424a7a1034..b56b04f917 100644
--- a/application/Espo/Core/Utils/Config.php
+++ b/application/Espo/Core/Utils/Config.php
@@ -76,6 +76,10 @@ class Config
 	 */
 	public function set($name, $value='')
 	{
+		if (is_array($name)) {
+			return $this->setArray($name);
+		}
+
         if (Json::isJSON($value)) {
         	$value= Json::decode($value);
         }
@@ -94,7 +98,7 @@ class Config
 	 * @param array $values
 	 * @return bool
 	 */
-	public function setArray($values)
+	protected function setArray($values)
 	{
 		if (Json::isJSON($values)) {
         	$values = Json::decode($values);
@@ -162,10 +166,8 @@ class Config
 	 * @param $isAdmin
 	 * @return bool
 	 */
-	//HERE
 	public function setData($data, $isAdmin=false)
 	{
-
 		$restrictItems = $this->getRestrictItems($isAdmin);
 
 		$values= array();
diff --git a/application/Espo/Core/Utils/Json.php b/application/Espo/Core/Utils/Json.php
index 5e19e193db..ddf41bebe8 100644
--- a/application/Espo/Core/Utils/Json.php
+++ b/application/Espo/Core/Utils/Json.php
@@ -14,10 +14,14 @@ class Json
      */
 	public static function encode($value, $options = 0, $depth = 512)
 	{
-		if(version_compare(phpversion(), '5.5.0', '>=')) {
+		if ($options == 0) {
+			$options = JSON_PRETTY_PRINT;	
+		}
+
+		if (version_compare(phpversion(), '5.5.0', '>=')) {
 	        $json = json_encode($value, $options, $depth);
 	    }
-	    elseif(version_compare(phpversion(), '5.3.0', '>=')) {
+	    elseif (version_compare(phpversion(), '5.3.0', '>=')) {
 			/*Check if options are supported for this version of PHP*/
 	    	if (is_int($options)) {
             	$json = json_encode($value, $options);
diff --git a/application/Espo/Core/Utils/Metadata.php b/application/Espo/Core/Utils/Metadata.php
index 98822724dc..d1d35d330c 100644
--- a/application/Espo/Core/Utils/Metadata.php
+++ b/application/Espo/Core/Utils/Metadata.php
@@ -202,7 +202,7 @@ class Metadata
         	$path = str_replace('{*}', $moduleName, $this->paths['modulePath']);
 		}	
 
-		$result= $this->getFileManager()->putContents(array($path, $type, $scope.'.json'), $data);
+		$result= $this->getFileManager()->mergeContents(array($path, $type, $scope.'.json'), $data, true);
 
         return $result;
 	}
diff --git a/tests/Espo/Core/Utils/ConfigTest.php b/tests/Espo/Core/Utils/ConfigTest.php
index 31e9931d28..00d61feafb 100644
--- a/tests/Espo/Core/Utils/ConfigTest.php
+++ b/tests/Espo/Core/Utils/ConfigTest.php
@@ -67,4 +67,25 @@ class ConfigTest extends \PHPUnit_Framework_TestCase
         $this->assertTrue($this->object->set($setKey, 'Another Wrong Value'));
 	}
 
+	function testSetArray()
+	{
+		$this->reflection->setProperty('defaultConfigPath', 'tests/testData/Utils/Config/defaultConfigArray.php');
+
+		$values = array(
+			'testOption' => 'Test',
+			'testOption2' => 'Test2',			
+		);        
+
+        $this->assertTrue($this->object->set($values));
+        $this->assertEquals('Test', $this->object->get('testOption'));
+        $this->assertEquals('Test2', $this->object->get('testOption2'));
+
+        $wrongArray = array(
+        	'testOption' => 'Another Wrong Value',
+        );
+        $this->assertTrue($this->object->set($wrongArray));
+
+        $this->reflection->setProperty('defaultConfigPath', $this->defaultConfigPath);
+	}
+
 }
\ No newline at end of file
diff --git a/tests/testData/Utils/Config/config.php b/tests/testData/Utils/Config/config.php
index e79daf19ff..c2460e7f50 100644
--- a/tests/testData/Utils/Config/config.php
+++ b/tests/testData/Utils/Config/config.php
@@ -31,6 +31,7 @@ return array (
     1 => 'EUR',
   ),
   'testOption' => 'Another Wrong Value',
+  'testOption2' => 'Test2',
 );
 
 ?>
\ No newline at end of file
diff --git a/tests/testData/Utils/Config/defaultConfig.php b/tests/testData/Utils/Config/defaultConfig.php
index 36739b4ac8..005191cd17 100644
--- a/tests/testData/Utils/Config/defaultConfig.php
+++ b/tests/testData/Utils/Config/defaultConfig.php
@@ -1,7 +1,7 @@
 <?php
 
 return array (
-  'configPath' => 'tests/testData/Utils/Config/config.php',
+  'configPath' => 'tests/testData/Utils/Config/testArray.php',
 
   'dateFormat' => 'MM/DD/YYYY',
   'timeFormat' => 'HH:mm',
diff --git a/tests/testData/Utils/Config/defaultConfigArray.php b/tests/testData/Utils/Config/defaultConfigArray.php
new file mode 100644
index 0000000000..36739b4ac8
--- /dev/null
+++ b/tests/testData/Utils/Config/defaultConfigArray.php
@@ -0,0 +1,56 @@
+<?php
+
+return array (
+  'configPath' => 'tests/testData/Utils/Config/config.php',
+
+  'dateFormat' => 'MM/DD/YYYY',
+  'timeFormat' => 'HH:mm',
+
+  'cron' => array(
+    'maxJobNumber' => 15, /*Max number of jobs per one execution*/    
+    'jobPeriod' => 7800, /*Period for jobs, ex. if cron executed at 15:35, it will execute all pending jobs for times from 14:05 to 15:35*/
+    'minExecutionTime' => 50, /*to avoid too frequency execution*/
+  ),
+
+  'systemUser' => array(
+    'id' => 'system',
+    'userName' => 'system',
+    'firstName' => '',
+    'lastName' => 'System',    
+  ),
+
+  'crud' => array(
+  	'get' => 'read',
+  	'post' => 'create',
+  	'put' => 'update',
+  	'patch' => 'patch',
+  	'delete' => 'delete',
+  ),
+  'systemItems' =>
+  array (
+    'systemItems',
+    'adminItems',
+    'configPath',
+    'cachePath',
+    'database',
+    'customPath',
+    'defaultsPath', 
+    'crud', 
+  ),
+  'adminItems' =>
+  array (
+    'defaultPermissions',
+    'logger',
+    'devMode',
+  ),
+  'currency' =>
+  array(
+    'base' => 'USD',
+    'rate' => array(
+      'EUR' => 1.37,
+      'GBP' => 1.67,
+    ),    
+  ),
+);
+
+?>
diff --git a/tests/testData/Utils/Config/testArray.php b/tests/testData/Utils/Config/testArray.php
new file mode 100644
index 0000000000..b4d1e6bc55
--- /dev/null
+++ b/tests/testData/Utils/Config/testArray.php
@@ -0,0 +1,7 @@
+<?php
+
+return array (
+  'testOption' => 'Another Wrong Value',
+);
+
+?>
\ No newline at end of file