diff --git a/class2.php b/class2.php
index edfd97aaa..a38c3966b 100755
--- a/class2.php
+++ b/class2.php
@@ -261,73 +261,6 @@ $e107 = e107::getInstance()->initCore($e107_paths, e_ROOT, $sql_info, varset($E1
 
 e107::getSingleton('eIPHandler');			// This auto-handles bans etc
 
-
-### NEW Register Autoload - do it asap
-if(!function_exists('spl_autoload_register'))
-{
-	// PHP >= 5.1.2 required
-	die('Fatal exception - spl_autoload_* required.');
-}
-
-
-// allow disable of autoloading - may be removed as e107::autoload_register() is flexible enough
-if(!defset('E107_DISABLE_AUTOLOAD', false))
-{
-	/**
-	 * Generic autoloader. (didn't work while in e107_class.php) 
-	 * @example if your plugin calls 'use Xxxxx\Yyyyy\Zzzzz;' it will attempt to load: ./vendor/Xxxxx/Yyyyy/Zzzzz.php
-	 */
-	function autoloadPsr0($className)
-	{
-		$className = str_replace("_", "\\", $className);
-		$className = ltrim($className, '\\');
-		$fileName = '';
-		$namespace = '';
-		
-		if ($lastNsPos = strripos($className, '\\'))
-		{
-			$namespace = substr($className, 0, $lastNsPos);
-			$className = substr($className, $lastNsPos + 1);
-			$fileName = str_replace('\\', DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;
-		}
-		
-		$fileName .= str_replace('_', DIRECTORY_SEPARATOR, $className) . '.php';
-		
-		$fullPath = 'vendor'. DIRECTORY_SEPARATOR . $fileName;
-		
-		if(file_exists($fullPath))
-		{
-			e107_require_once($fullPath);	
-		}
-		else
-		{
-			return false;	
-		} 
-		
-	}
-
-	e107::autoload_register(array('e107', 'autoload'));
-//	e107::autoload_register('autoloadPsr0');  // Generic 'use xxxx\yyyy\zzzz;' fix/solution for plugin developers. 
-	
-}
-
-	function genericAutoload($className)
-	    {
-	        $className = str_replace("_", "\\", $className);
-	        $className = ltrim($className, '\\');
-	        $fileName = '';
-	        $namespace = '';
-	        if ($lastNsPos = strripos($className, '\\'))
-	        {
-	            $namespace = substr($className, 0, $lastNsPos);
-	            $className = substr($className, $lastNsPos + 1);
-	            $fileName = str_replace('\\', DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;
-	        }
-	        $fileName .= str_replace('_', DIRECTORY_SEPARATOR, $className) . '.php';
-	
-	        e107_require_once($fileName);
-	    }
-
 /**
  * NEW - system security levels
  * Could be overridden by e107_config.php OR $CLASS2_INCLUDE script (if not set earlier)
diff --git a/e107_handlers/Shims/All.php b/e107_handlers/Shims/All.php
new file mode 100644
index 000000000..c49e68994
--- /dev/null
+++ b/e107_handlers/Shims/All.php
@@ -0,0 +1,17 @@
+<?php
+/**
+ * e107 website system
+ *
+ * Copyright (C) 2008-2018 e107 Inc (e107.org)
+ * Released under the terms and conditions of the
+ * GNU General Public License (http://www.gnu.org/licenses/gpl.txt)
+ *
+ * Shims for PHP internal functions
+ */
+
+namespace e107\Shims;
+
+class All
+{
+	use InternalShims;
+}
diff --git a/e107_handlers/Shims/Internal.php b/e107_handlers/Shims/Internal.php
new file mode 100644
index 000000000..2f628f80b
--- /dev/null
+++ b/e107_handlers/Shims/Internal.php
@@ -0,0 +1,17 @@
+<?php
+/**
+ * e107 website system
+ *
+ * Copyright (C) 2008-2018 e107 Inc (e107.org)
+ * Released under the terms and conditions of the
+ * GNU General Public License (http://www.gnu.org/licenses/gpl.txt)
+ *
+ * Shims for PHP internal functions
+ */
+
+namespace e107\Shims;
+
+class Internal
+{
+	use InternalShims;
+}
diff --git a/e107_handlers/Shims/InternalShims.php b/e107_handlers/Shims/InternalShims.php
new file mode 100644
index 000000000..eb9cae7be
--- /dev/null
+++ b/e107_handlers/Shims/InternalShims.php
@@ -0,0 +1,63 @@
+<?php
+/**
+ * e107 website system
+ *
+ * Copyright (C) 2008-2018 e107 Inc (e107.org)
+ * Released under the terms and conditions of the
+ * GNU General Public License (http://www.gnu.org/licenses/gpl.txt)
+ *
+ * Shims for PHP internal functions
+ */
+
+namespace e107\Shims;
+
+trait InternalShims
+{
+	/**
+	 * Outputs a file
+	 *
+	 * Resilient replacement for PHP internal readfile()
+	 *
+	 * @see https://github.com/e107inc/e107/issues/3528 Why this method was implemented
+	 * @param string $filename The filename being read.
+	 * @param bool $use_include_path You can use the optional second parameter and set it to TRUE,
+	 *                               if you want to search for the file in the include_path, too.
+	 * @param resource $context A context stream resource.
+	 * @return int|bool Returns the number of bytes read from the file.
+	 *                   If an error occurs, FALSE is returned.
+	 */
+	public static function readfile($filename, $use_include_path = FALSE, $context = NULL)
+	{
+		$output = @readfile($filename, $use_include_path, $context);
+		if ($output === NULL)
+		{
+			return self::readfile_alt($filename, $use_include_path, $context);
+		}
+		return $output;
+	}
+
+	/**
+	 * Outputs a file
+	 *
+	 * Alternative implementation using file streams
+	 *
+	 * @param $filename
+	 * @param bool $use_include_path
+	 * @param resource $context
+	 * @return bool|int
+	 */
+	public static function readfile_alt($filename, $use_include_path = FALSE, $context = NULL)
+	{
+		// fopen() silently returns false if there is no context
+		if (!is_resource($context)) $context = stream_context_create();
+
+		$handle = @fopen($filename, 'rb', $use_include_path, $context);
+		if ($handle === FALSE) return FALSE;
+		while (!feof($handle))
+		{
+			echo(fread($handle, 8192));
+		}
+		fclose($handle);
+		return filesize($filename);
+	}
+}
\ No newline at end of file
diff --git a/e107_handlers/Shims/eShims.php b/e107_handlers/Shims/eShims.php
new file mode 100644
index 000000000..e840f9cca
--- /dev/null
+++ b/e107_handlers/Shims/eShims.php
@@ -0,0 +1,18 @@
+<?php
+/**
+ * e107 website system
+ *
+ * Copyright (C) 2008-2018 e107 Inc (e107.org)
+ * Released under the terms and conditions of the
+ * GNU General Public License (http://www.gnu.org/licenses/gpl.txt)
+ *
+ * Shims for PHP internal functions
+ */
+
+// e107 v2-style classes
+namespace
+{
+	class eShims extends \e107\Shims\All
+	{
+	}
+}
\ No newline at end of file
diff --git a/e107_handlers/e107_class.php b/e107_handlers/e107_class.php
index 7c4b1ed80..28055aefb 100755
--- a/e107_handlers/e107_class.php
+++ b/e107_handlers/e107_class.php
@@ -226,6 +226,7 @@ class e107
 		'eRequest'                       => '{e_HANDLER}application.php',
 		'eResponse'                      => '{e_HANDLER}application.php',
 		'eRouter'                        => '{e_HANDLER}application.php',
+		'eShims'                         => '{e_HANDLER}Shims/eShims.php',
 		'eUrl'                           => '{e_HANDLER}e107Url.php',
 		'eUrlConfig'                     => '{e_HANDLER}application.php',
 		'eUrlRule'                       => '{e_HANDLER}application.php',
@@ -4613,31 +4614,31 @@ class e107
 	{
 		$_data = self::getSession()->get('__sessionBrowserCache');
 		if(!is_array($_data)) $_data = array();
-		
+
 		if(null === $set)
 		{
 			return in_array(e_REQUEST_URI, $_data);
 		}
-		
+
 		// remove e_REQUEST_URI from the set
 		if(false === $set)
 		{
 			$check = array_search(e_REQUEST_URI, $_data);
-			if(false !== $check) 
+			if(false !== $check)
 			{
 				unset($_data[$check]);
 				self::getSession()->set('__sessionBrowserCache', $_data);
 				return;
 			}
 		}
-		
+
 		if(true === $set)
 		{
 			$set = e_REQUEST_URI;
 		}
-		
+
 		if(empty($set) || !is_string($set) || in_array($set, $_data)) return;
-		
+
 		$_data[]  = $set;
 		self::getSession()->set('__sessionBrowserCache', array_unique($_data));
 	}
@@ -4669,7 +4670,7 @@ class e107
 	 * If $do_return, will always return with ban status - TRUE for OK, FALSE for banned.
 	 * If return permitted, will never display a message for a banned user; otherwise will display any message then exit
 	 * FIXME - moved to ban helper, replace all calls
-	 * 
+	 *
 	 *
 	 * @param string $query
 	 * @param boolean $show_error
@@ -4720,11 +4721,11 @@ class e107
 	 * @param string $div divider
 	 * @return string encoded IP
 	 */
-	 
+
 	public function ipEncode($ip, $div = ':')
 	{
 		return self::getIPHandler()->ipEncode($ip);
-	} 
+	}
 
 	/**
 	 * Takes an encoded IP address - returns a displayable one
@@ -4829,18 +4830,25 @@ class e107
 	 */
 	public static function autoload_register($function, $prepend = false)
 	{
+		### NEW Register Autoload - do it asap
+		if(!function_exists('spl_autoload_register'))
+		{
+			// PHP >= 5.1.2 required
+			die_fatal_error('Fatal exception - spl_autoload_* required.');
+		}
+
 		if(!$prepend || false === ($registered = spl_autoload_functions()))
 		{
 			return spl_autoload_register($function);
 		}
-		
-		foreach ($registered as $r) 
+
+		foreach ($registered as $r)
 		{
 			spl_autoload_unregister($r);
 		}
-		
+
 		$result = spl_autoload_register($function);
-		foreach ($registered as $r) 
+		foreach ($registered as $r)
 		{
 			if(!spl_autoload_register($r)) $result = false;
 		}
@@ -4849,7 +4857,7 @@ class e107
 
 	/**
 	 * Former __autoload, generic core autoload logic
-	 * 
+	 *
 	 * Magic class autoload.
 	 * We are raising plugin structure standard here - plugin auto-loading works ONLY if
 	 * classes live inside 'includes' folder.
@@ -4886,6 +4894,14 @@ class e107
 		{
 	        return;
 	    }
+
+		// Detect namespaced class
+		if (strpos($className, '\\') !== false)
+		{
+			self::autoload_namespaced($className);
+			return;
+		}
+
 		$tmp = explode('_', $className);
 
 		//echo 'autoloding...'.$className.'<br />';
@@ -4894,7 +4910,7 @@ class e107
 			case 'plugin': // plugin handlers/shortcode batches
 				array_shift($tmp); // remove 'plugin'
 				$end = array_pop($tmp); // check for 'shortcodes' end phrase
-	
+
 				if (!isset($tmp[0]) || !$tmp[0])
 				{
 					if($end)
@@ -4905,7 +4921,7 @@ class e107
 					}
 					return; // In case we get an empty class part
 				}
-	
+
 				// Currently only batches inside shortcodes/ folder are auto-detected,
 				// read the todo for e_shortcode.php related problems
 				if('shortcodes' == $end)
@@ -4919,13 +4935,13 @@ class e107
 				{
 					$tmp[] = $end; // not a shortcode batch - append the end phrase again
 				}
-	
+
 				// Handler check
 				$tmp[0] .= '/includes'; //folder 'includes' is not part of the class name
 				$filename = e_PLUGIN.implode('/', $tmp).'.php';
 				//TODO add debug screen Auto-loaded classes - ['plugin: '.$filename.' - '.$className];
 			break;
-	
+
 			default: //core libraries, core shortcode batches
 				// core SC batch check
 				$end = array_pop($tmp);
@@ -4934,12 +4950,12 @@ class e107
 					$filename = e_CORE.'shortcodes/batch/'.$className.'.php'; // core shortcode batch
 					break;
 				}
-	
+
 				$filename = self::getHandlerPath($className, true);
 				//TODO add debug screen Auto-loaded classes - ['core: '.$filename.' - '.$className];
 			break;
 		}
-	
+
 		if(!empty($filename) && is_file($filename)) // Test with chatbox_menu
 		{
 			// autoload doesn't REQUIRE files, because this will break things like call_user_func()
@@ -4947,6 +4963,27 @@ class e107
 		}
 	}
 
+	/**
+	 * Autoloading logic for namespaced classes
+	 *
+	 * @param $className
+	 * @return void
+	 */
+	private static function autoload_namespaced($className)
+	{
+		$levels = explode('\\', $className);
+
+		// Guard against classes that are not ours
+		if ($levels[0] != 'e107') return;
+
+		$levels[0] = e_HANDLER;
+		$classPath = implode('/', $levels).'.php';
+		if (is_file($classPath) && is_readable($classPath))
+		{
+			include($classPath);
+		}
+	}
+
 	public function __get($name)
 	{
 		switch ($name)
@@ -5125,3 +5162,5 @@ class e107
 
 
 }
+
+e107::autoload_register(array(e107::class, 'autoload'));
\ No newline at end of file
diff --git a/e107_handlers/resize_handler.php b/e107_handlers/resize_handler.php
index 0448d4d48..61685374c 100644
--- a/e107_handlers/resize_handler.php
+++ b/e107_handlers/resize_handler.php
@@ -111,7 +111,7 @@ function resize_image($source_file, $destination_file, $type = "upload", $model
 				{
 					if (($result = mimeFromFilename($source_file)) === FALSE) { return FALSE; }
 					header($result);
-					if (@readfile($source_file) === FALSE) { return FALSE; }
+					if (eShims::readfile($source_file) === FALSE) { return FALSE; }
 				}
 				else
 				{
diff --git a/install.php b/install.php
index 4f89a2c24..8074303af 100644
--- a/install.php
+++ b/install.php
@@ -163,18 +163,6 @@ if($e107->initInstall($e107_paths, $ebase, $override)===false)
 	
 unset($e107_paths,$override,$ebase);
 
-
-
-### NEW Register Autoload - do it asap
-if(!function_exists('spl_autoload_register'))
-{
-	// PHP >= 5.1.2 required
-	die_fatal_error('Fatal exception - spl_autoload_* required.');
-}
-
-// register core autoload
-e107::autoload_register(array('e107', 'autoload'));
-
 // NEW - session handler
 require_once(e_HANDLER.'session_handler.php');
 define('e_SECURITY_LEVEL', e_session::SECURITY_LEVEL_NONE);
diff --git a/thumb.php b/thumb.php
index b863bce59..ea0bd3eba 100755
--- a/thumb.php
+++ b/thumb.php
@@ -324,11 +324,12 @@ class e_thumbpage
 
 		$fname = e107::getParser()->thumbCacheFile($this->_src_path, $options);
 
-		if(($this->_cache === true) && is_file(e_CACHE_IMAGE.$fname) && is_readable(e_CACHE_IMAGE.$fname) && ($this->_debug !== true))
+		$cache_filename = e_CACHE_IMAGE . $fname;
+		if(($this->_cache === true) && is_file($cache_filename) && is_readable($cache_filename) && ($this->_debug !== true))
 		{
-			$thumbnfo['lmodified'] = filemtime(e_CACHE_IMAGE.$fname);
-			$thumbnfo['md5s'] = md5_file(e_CACHE_IMAGE.$fname);
-			$thumbnfo['fsize'] = filesize(e_CACHE_IMAGE.$fname);
+			$thumbnfo['lmodified'] = filemtime($cache_filename);
+			$thumbnfo['md5s'] = md5_file($cache_filename);
+			$thumbnfo['fsize'] = filesize($cache_filename);
 			
 			// Send required headers
 			if($this->_debug !== true)
@@ -349,9 +350,7 @@ class e_thumbpage
 			// Send required headers
 			//$this->sendHeaders($thumbnfo);
 
-
-
-			@readfile(e_CACHE_IMAGE.$fname);
+			eShims::readfile($cache_filename);
 			//$bench->end()->logResult('thumb.php', $_GET['src'].' - retrieve cache');
 			
 			exit;
@@ -443,7 +442,7 @@ class e_thumbpage
 	//exit;
 
 		// set cache
-		$thumb->save(e_CACHE_IMAGE.$fname);
+		$thumb->save($cache_filename);