Fix para Doctrine

lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php

@@ -728,8 +728,11 @@ class ClassMetadataInfo implements ClassMetadata
      */
     public function newInstance()
     {
-        if ($this->_prototype === null) {
-            $this->_prototype = unserialize(sprintf('O:%d:"%s":0:{}', strlen($this->name), $this->name));
+	if ($this->_prototype === null) {
+            $this->_prototype = @unserialize(sprintf('O:%d:"%s":0:{}', strlen($this->name), $this->name));
+            if ($this->_prototype === false) {
+                $this->_prototype = @unserialize(sprintf('C:%d:"%s":0:{}', strlen($this->name), $this->name));
+            }
         }
 
         return clone $this->_prototype;