Index: branches/5.2.x/core/units/helpers/language_import_helper.php
===================================================================
diff -u -N -r15225 -r15237
--- branches/5.2.x/core/units/helpers/language_import_helper.php	(.../language_import_helper.php)	(revision 15225)
+++ branches/5.2.x/core/units/helpers/language_import_helper.php	(.../language_import_helper.php)	(revision 15237)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: language_import_helper.php 15225 2012-03-20 09:48:10Z alex $
+* @version	$Id: language_import_helper.php 15237 2012-03-26 16:52:18Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -648,7 +648,8 @@
 				return false;
 			}
 
-			if ( $languages->count() ) {
+			// PHP 5.3 version would be: $languages->count()
+			if ( count($languages->children()) ) {
 				$this->_processLanguages($languages);
 			}
 
@@ -806,7 +807,8 @@
 					/* @var $sub_node SimpleXMLElement */
 
 					if ( in_array($sub_node->getName(), $container_nodes) ) {
-						if ( !$sub_node->count() ) {
+						// PHP 5.3 version would be: !$sub_node->count()
+						if ( !count($sub_node->children()) ) {
 							continue;
 						}
 
@@ -1062,7 +1064,8 @@
 				$fields_hash = array_merge($fields_hash, $other_translations[$country_state_id]);
 				$this->Conn->doInsert($fields_hash, $this->_tables['country-state'], 'REPLACE', false);
 
-				if ( !$process_states && $country_state_node->count() ) {
+				// PHP 5.3 version would be: $country_state_node->count()
+				if ( !$process_states && count($country_state_node->children()) ) {
 					$this->_processCountries($country_state_node, $language_id, $language_encoding, true);
 				}
 			}
Index: branches/5.2.x/core/install/prerequisites.php
===================================================================
diff -u -N -r15176 -r15237
--- branches/5.2.x/core/install/prerequisites.php	(.../prerequisites.php)	(revision 15176)
+++ branches/5.2.x/core/install/prerequisites.php	(.../prerequisites.php)	(revision 15237)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: prerequisites.php 15176 2012-03-12 11:39:04Z alex $
+* @version	$Id: prerequisites.php 15237 2012-03-26 16:52:18Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -117,31 +117,32 @@
 		function CheckSystemRequirements()
 		{
 			$ret = Array ();
-			$ret['php_version'] = version_compare(PHP_VERSION, '5.3.2', '>=');
+			$ret['php_version'] = version_compare(PHP_VERSION, '5.2.0', '>=');
 			$ret['url_rewriting'] = function_exists('apache_get_modules') && in_array('mod_rewrite', apache_get_modules());
 			$ret['memcache'] = class_exists('Memcache');
 			$ret['curl'] = function_exists('curl_init');
 			$ret['simplexml'] = function_exists('simplexml_load_string');
+			$ret['spl'] = function_exists('spl_autoload_register');
 			$ret['freetype'] = function_exists('imagettfbbox');
 
-			$ret['gd_version'] = $ret['jpeg'] = false;
+			$ret['gd_version'] = false;
 
 			if ( function_exists('gd_info') ) {
 				$gd_info = gd_info();
-
 				$gd_version = preg_replace('/[^\d.]/', '', $gd_info['GD Version']);
 				$ret['gd_version'] = version_compare($gd_version, '1.8', '>=');
-
-				$ret['jpeg'] = isset($gd_info['JPEG Support']) && $gd_info['JPEG Support'];
 			}
 
+			$ret['jpeg'] = function_exists('imagecreatefromjpeg');
 			$ret['mysql'] = function_exists('mysql_connect');
 			$ret['json'] = function_exists('json_encode');
 
 			$output = shell_exec('java -version 2>&1');
 			$ret['java'] = stripos($output, 'java version') !== false;
 
 			$ret['memory_limit'] = $this->isPhpSettingChangeable('memory_limit', '33M');
+			$ret['display_errors'] = $this->isPhpSettingChangeable('display_errors', '1');
+			$ret['error_reporting'] = $this->canChangeErrorReporting();
 			$ret['date.timezone'] = ini_get('date.timezone') != '';
 
 			$ret['variables_order'] = strpos(ini_get('variables_order'), 'GPC') !== false;
@@ -151,6 +152,26 @@
 		}
 
 		/**
+		 * Detects if error reporting can be changed at runtime
+		 *
+		 * @return bool
+		 * @access protected
+		 */
+		protected function canChangeErrorReporting()
+		{
+			$old_value = error_reporting(E_PARSE);
+			$new_value = error_reporting();
+
+			if ( $new_value == E_PARSE ) {
+				error_reporting($old_value);
+
+				return true;
+			}
+
+			return false;
+		}
+
+		/**
 		 * Detects if setting of php.ini can be changed
 		 *
 		 * @param string $setting_name
@@ -159,16 +180,15 @@
 		 */
 		protected function isPhpSettingChangeable($setting_name, $new_value)
 		{
-			$backup_value = ini_get($setting_name);
-			ini_set($setting_name, $new_value);
+			$old_value = ini_get($setting_name);
 
-			if ( ini_get($setting_name) != $backup_value ) {
-				ini_set($setting_name, $backup_value);
-
-				return true;
+			if ( ini_set($setting_name, $new_value) === false ) {
+				return false;
 			}
 
-			return false;
+			ini_set($setting_name, $old_value);
+
+			return true;
 		}
 
 		/**
Index: branches/5.2.x/core/install/step_templates/sys_requirements.tpl
===================================================================
diff -u -N -r15165 -r15237
--- branches/5.2.x/core/install/step_templates/sys_requirements.tpl	(.../sys_requirements.tpl)	(revision 15165)
+++ branches/5.2.x/core/install/step_templates/sys_requirements.tpl	(.../sys_requirements.tpl)	(revision 15237)
@@ -11,20 +11,23 @@
 		</tr>';
 
 	$check_titles = Array (
-		'php_version' => 'PHP version: 5.3.2+ (required)',
+		'php_version' => 'PHP version: 5.2.0+ (required)',
 		'url_rewriting' => 'URL Rewriting Support (optional)',
 		'java' => 'Java (optional)',
 		'sep1' => '<strong>PHP extensions:</strong>',
 		'memcache' => '- Memcache (optional)',
 		'curl' => '- Curl (required)',
 		'simplexml' => '- SimpleXML (required)',
+		'spl' => '- Standard PHP Library (required)',
 		'freetype' => '- Freetype (required)',
 		'gd_version' => '- GD 1.8+ (required)',
-		'jpeg' => '- jpeg (required)',
+		'jpeg' => '- JPEG (required)',
 		'mysql' => '- MySQL (required)',
 		'json' => '- JSON (required)',
 		'sep2' => '<strong>PHP settings:</strong>',
 		'memory_limit' => "- ini_set('memory_limit', ...) works (optional)",
+		'display_errors' => "- ini_set('display_errors', ...) works (optional)",
+		'error_reporting' => "- error_reporting(...) works (optional)",
 		'date.timezone' => "- ini_get('date.timezone') - timezone set (required)",
 		'variables_order' => "- ini_get('variables_order') - contains \"GPC\" string",
 		'output_buffering' => "- ini_get('output_buffering') > 0 - buffering works (required)",