diff --git a/inc/inc.ClassSettings.php b/inc/inc.ClassSettings.php
index fddfe052d..e8ee320c5 100644
--- a/inc/inc.ClassSettings.php
+++ b/inc/inc.ClassSettings.php
@@ -1273,6 +1273,7 @@ class Settings { /* {{{ */
 
 		// TODO
 		// $this->_coreDir
+/*
 		if($this->_coreDir) {
 			if (!file_exists($this->_coreDir ."Core.php")) {
 				$result["coreDir"] = array(
@@ -1293,7 +1294,7 @@ class Settings { /* {{{ */
 					);
 			}
 		}
-
+*/
 		// $this->_httpRoot
 		$tmp = $this->curPageURL();
 		$tmp = str_replace ("install.php", "" , $tmp);
@@ -1444,7 +1445,7 @@ class Settings { /* {{{ */
 						if(!empty($this->_coreDir))
 							require_once($this->_coreDir.'/Core.php');
 						else
-							require_once('SeedDMS/Core.php');
+							require_once($this->_rootDir.'../pear/SeedDMS/Core.php');
 						$tmpcore = new SeedDMS_Core_DMS(null, $this->_contentDir);
 						$db = new SeedDMS_Core_DatabaseAccess($this->_dbDriver, $this->_dbHostname, $this->_dbUser, $this->_dbPass, $this->_dbDatabase);
 						if(!$db->connect()) {
@@ -1507,7 +1508,7 @@ class Settings { /* {{{ */
 		}
 
 		// Check PHP version
-		if (version_compare(PHP_VERSION, '5.6.38') < 0) {
+		if (version_compare(PHP_VERSION, '7.2.5') < 0) {
 			$result["php_version"] = array(
 				"status" => "versiontolow",
 				"type" => "error",
@@ -1517,6 +1518,15 @@ class Settings { /* {{{ */
 
 		// Check PHP configuration
 		$loaded_extensions = get_loaded_extensions();
+		// xml
+		if (!in_array("xml", $loaded_extensions)) {
+			$result["php_xml"] = array(
+				"status" => "notfound",
+				"type" => "error",
+				"suggestion" => "activate_php_extension"
+			);
+		}
+
 		// gd2
 		if (!in_array("gd", $loaded_extensions)) {
 			$result["php_gd2"] = array(
@@ -1535,6 +1545,42 @@ class Settings { /* {{{ */
 			);
 		}
 
+		// json
+		if (!in_array("json", $loaded_extensions)) {
+			$result["php_json"] = array(
+				"status" => "notfound",
+				"type" => "error",
+				"suggestion" => "activate_php_extension"
+			);
+		}
+
+		// zip
+		if (!in_array("zip", $loaded_extensions)) {
+			$result["php_zip"] = array(
+				"status" => "notfound",
+				"type" => "error",
+				"suggestion" => "activate_php_extension"
+			);
+		}
+
+		// fileinfo
+		if (!in_array("fileinfo", $loaded_extensions)) {
+			$result["php_fileinfo"] = array(
+				"status" => "notfound",
+				"type" => "error",
+				"suggestion" => "activate_php_extension"
+			);
+		}
+
+		// sqlite3
+		if (!in_array("sqlite3", $loaded_extensions)) {
+			$result["php_sqlite3"] = array(
+				"status" => "notfound",
+				"type" => "error",
+				"suggestion" => "activate_php_extension"
+			);
+		}
+
 		// database
 		if (!in_array('pdo_'.$this->_dbDriver, $loaded_extensions)) {
 			$result["php_dbDriver"] = array(
@@ -1558,6 +1604,7 @@ class Settings { /* {{{ */
 		 */
 
 		// Check for HTTP/WebDAV/Server.php
+		/*
 		if (!Settings::findInIncPath('HTTP/WebDAV/Server.php')) {
 			$result["pear_webdav"] = array(
 				"status" => "notfound",
@@ -1565,8 +1612,10 @@ class Settings { /* {{{ */
 				"suggestion" => "install_pear_package_webdav"
 			);
 		}
+		 */
 
 		// Check for Zend/Search/Lucene.php
+		/*
 		if (!Settings::findInIncPath('Zend/Search/Lucene.php')) {
 			$result["zendframework"] = array(
 				"status" => "notfound",
@@ -1574,6 +1623,7 @@ class Settings { /* {{{ */
 				"suggestion" => "install_zendframework"
 			);
 		}
+		 */
 		return $result;
 	} /* }}} */