diff --git a/classes/Settings.php b/classes/Settings.php
index 05e5a1f..218784e 100644
--- a/classes/Settings.php
+++ b/classes/Settings.php
@@ -4,6 +4,83 @@ namespace ICEcoder;
 
 class Settings
 {
+    public function __construct()
+    {
+        // Set version number and document root as core settings
+        $this->versionNo = "7.0";
+        $this->docRoot = $_SERVER['DOCUMENT_ROOT'];
+    }
+
+    public function getConfigGlobalFileDetails()
+    {
+        // Return details about the global config file
+        $fileName = 'config-global.php';
+        $fullPath = dirname(__FILE__) . "/../data/" . $fileName;
+        $exists = file_exists($fullPath);
+        $readable = is_readable($fullPath);
+        $writable = is_writable($fullPath);
+        return [
+            "fileName" => $fileName,
+            "fullPath" => $fullPath,
+            "exists" => $exists,
+            "readable" => $readable,
+            "writable" => $writable,
+        ];
+    }
+
+    public function getConfigGlobalTemplate()
+    {
+        // Return the serialized global config template
+        $fileName = 'template-config-global.php';
+        $fullPath = dirname(__FILE__) . "/../lib/" . $fileName;
+        if (function_exists('opcache_invalidate')) {
+            opcache_invalidate($fullPath, true);
+        }
+        $settings = file_get_contents($fullPath);
+        return $settings;
+    }
+
+    public function getConfigGlobalSettings()
+    {
+        // Start an array with version number and document root
+        $settings = [];
+        $settings['versionNo'] = $this->versionNo;
+        $settings['docRoot'] = $this->docRoot;
+        // Get global config file details
+        $fullPath = $this->getConfigGlobalFileDetails()['fullPath'];
+        // Load serialized data from the global config and convert to an array
+        if (function_exists('opcache_invalidate')) {
+            opcache_invalidate($fullPath, true);
+        }
+        $settingsFromFile = file_get_contents($fullPath);
+        $settingsFromFile = str_replace("<?php\n/*\n\n", "", $settingsFromFile);
+        $settingsFromFile = str_replace("\n\n*/\n?>", "", $settingsFromFile);
+        $settingsFromFile = unserialize($settingsFromFile);
+        // Merge that with the array we started with and return
+        $settings = array_merge($settings, $settingsFromFile);
+        return $settings;
+    }
+
+    public function setConfigGlobalSettings($settings)
+    {
+        // Get the global config file details
+        $fullPath = $this->getConfigGlobalFileDetails()['fullPath'];
+        if ($fConfigSettings = fopen($fullPath, 'w')) {
+            // If the settings we've received aren't in serialized format yet, do that now
+            // As $settings could be a serialized string or array
+            if (is_array($settings)) {
+                unset($settings['versionNo']);
+                unset($settings['docRoot']);
+                $settings = "<?php\n/*\n\n" . serialize($settings) . "\n\n*/\n?" . ">";
+            }
+            // Now we have a serialized string, save it in the global config file
+            fwrite($fConfigSettings, $settings);
+            fclose($fConfigSettings);
+            return true;
+        } else {
+            return false;
+        }
+    }
 
     public function updateConfigCreateDate(): void
     {
@@ -74,20 +151,12 @@ class Settings
 
     public function disableFurtherRegistration(): void
     {
-        global $configSettings;
-
         // Disable the enableRegistration config setting if the user had that option chosen
         if (true === isset($_POST['disableFurtherRegistration'])) {
-            $updatedConfigSettingsFile = getData(dirname(__FILE__) . "/../data/" . $configSettings);
-            if ($fUConfigSettings = fopen(dirname(__FILE__) . "/../data/" . $configSettings, 'w')) {
-                $updatedConfigSettingsFile = str_replace('"enableRegistration"	=> true','"enableRegistration"	=> false', $updatedConfigSettingsFile);
-                fwrite($fUConfigSettings, $updatedConfigSettingsFile);
-                fclose($fUConfigSettings);
-            } else {
-                $reqsPassed = false;
-                $reqsFailures = ["phpUpdateConfig"];
-                include dirname(__FILE__)."/../lib/requirements.php";
-            }
+            // Update global config settings file
+            $ICEcoderSettingsFromFile = $this->getConfigGlobalSettings();
+            $ICEcoderSettingsFromFile['enableRegistration'] = false;
+            $this->setConfigGlobalSettings($ICEcoderSettingsFromFile);
         }
     }
 }
diff --git a/lib/requirements.php b/lib/requirements.php
index 5f90c73..6fe853d 100644
--- a/lib/requirements.php
+++ b/lib/requirements.php
@@ -1,4 +1,8 @@
 <?php
+require_once dirname(__FILE__) . "/../classes/Settings.php";
+
+$settingsClass = new \ICEcoder\Settings();
+
 if (false === isset($reqsPassed)) {
 	// Start off assuming all is fine with requirements
 	$reqsPassed = true;
@@ -17,15 +21,6 @@ if (false === isset($_SESSION) || "" === session_id()) {
 	array_push($reqsFailures, "phpSession");
 }
 
-// Check we can read config settings
-if (file_exists(dirname(__FILE__) . "/../data/config-settings.php")) {
-	include(dirname(__FILE__) . "/../data/config-settings.php");
-	if (false === isset($ICEcoderSettings['versionNo'])) {
-		$reqsPassed = false;
-		array_push($reqsFailures, "phpReadFile");
-	}
-}
-
 // Check we have allow_url_fopen enabled
 if (false === ini_get('allow_url_fopen')) {
     $reqsPassed = false;
@@ -38,7 +33,7 @@ if (false === $reqsPassed) {
 ?>
 <html>
 <head>
-<title>ICEcoder <?php echo $ICEcoderSettings['versionNo'];?> : Requirements problem!</title>
+<title>ICEcoder <?php echo $settingsClass->versionNo;?> : Requirements problem!</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 <meta name="robots" content="noindex, nofollow">
 <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
@@ -53,7 +48,7 @@ if (false === $reqsPassed) {
 	<div class="screenVCenter">
 		<div class="screenCenter">
 			<img src="assets/images/icecoder.png" alt="ICEcoder">
-			<div class="version" style="margin-bottom: 22px">v <?php echo $ICEcoderSettings['versionNo'];?></div>
+			<div class="version" style="margin-bottom: 22px">v <?php echo $settingsClass->versionNo;?></div>
 
 			<span style="display: inline-block; color: #fff">
 		        	<b style="padding: 5px; background: #b00; color: #fff">Requirements problem!</b><br><br><br><br>
@@ -65,15 +60,21 @@ if (false === $reqsPassed) {
 				if (true === in_array("phpSession", $reqsFailures)) {
 					echo "You don't appear to have a<br>working PHP session<br><br>";
 				}
+                if (true === in_array("phpCreateConfig", $reqsFailures)) {
+                    echo "Cannot create config file:<br>data/" . $settingsClass->getConfigGlobalFileDetails()['fileName'] . "<br>Please check write permissions<br>on data dir and reload page<br><br>";
+                }
+				if (true === in_array("phpFileExists", $reqsFailures)) {
+					echo "You don't seem to have<br>the config file<br><br>";
+				}
 				if (true === in_array("phpReadFile", $reqsFailures)) {
 					echo "You don't seem to be able<br>to read the config file<br><br>";
 				}
+                if (true === in_array("phpWriteFile", $reqsFailures)) {
+                    echo "You don't seem to be able<br>to write to the config file<br><br>";
+                }
                 if (true === in_array("phpAllowURLFOpen", $reqsFailures)) {
                     echo "You don't seem to have<br>allow_url_fopen enabled<br><br>";
                 }
-				if (true === in_array("phpCreateConfig", $reqsFailures)) {
-					echo "Cannot update config file:<br>data/".$configSettings."<br>Please check write permissions<br>on data dir and reload page<br><br>";
-				}
 				if (true === in_array("phpCreateSettings", $reqsFailures)) {
 					echo "Couldn't create:<br>data/$settingsFile<br>Maybe you need write<br>permissions on the data dir?<br><br>";
 				}