diff --git a/libs/sysplugins/smarty_internal_method_mustcompile.php b/libs/sysplugins/smarty_internal_method_mustcompile.php
index 7766a75e..f28a68e6 100644
--- a/libs/sysplugins/smarty_internal_method_mustcompile.php
+++ b/libs/sysplugins/smarty_internal_method_mustcompile.php
@@ -31,7 +31,7 @@ class Smarty_Internal_Method_MustCompile
     public function mustCompile(Smarty_Internal_Template $_template)
     {
         if (!$_template->source->exists) {
-            if ($_template->parent->_objType == 2) {
+            if (isset($_template->parent) && $_template->parent->_objType == 2) {
                 $parent_resource = " in '$_template->parent->template_resource}'";
             } else {
                 $parent_resource = '';
diff --git a/libs/sysplugins/smarty_internal_nocache_insert.php b/libs/sysplugins/smarty_internal_nocache_insert.php
index 916bd8cc..b3d5fa86 100644
--- a/libs/sysplugins/smarty_internal_nocache_insert.php
+++ b/libs/sysplugins/smarty_internal_nocache_insert.php
@@ -42,7 +42,7 @@ class Smarty_Internal_Nocache_Insert
             $_output .= "echo {$_function}(" . var_export($_attr, true) . ",\$_smarty_tpl);?>";
         }
         $_tpl = $_template;
-        while ($_tpl->parent->_objType == 2) {
+        while (isset($_tpl->parent) && $_tpl->parent->_objType == 2) {
             $_tpl = $_tpl->parent;
         }
 
diff --git a/libs/sysplugins/smarty_internal_resource_file.php b/libs/sysplugins/smarty_internal_resource_file.php
index 2fe2421f..47736892 100644
--- a/libs/sysplugins/smarty_internal_resource_file.php
+++ b/libs/sysplugins/smarty_internal_resource_file.php
@@ -35,7 +35,7 @@ class Smarty_Internal_Resource_File extends Smarty_Resource
             return is_file($file) ? $file : false;
         }
         // go relative to a given template?
-        if ($file[0] == '.' && $_template && $_template->parent->_objType == 2 &&
+        if ($file[0] == '.' && $_template && isset($_template->parent) && $_template->parent->_objType == 2 &&
             preg_match('#^[.]{1,2}[\\\/]#', $file)
         ) {
             if ($_template->parent->source->type != 'file' && $_template->parent->source->type != 'extends' &&
diff --git a/libs/sysplugins/smarty_internal_resource_php.php b/libs/sysplugins/smarty_internal_resource_php.php
index 0bb99b4a..62680625 100644
--- a/libs/sysplugins/smarty_internal_resource_php.php
+++ b/libs/sysplugins/smarty_internal_resource_php.php
@@ -72,7 +72,7 @@ class Smarty_Internal_Resource_Php extends Smarty_Internal_Resource_File
             throw new SmartyException("PHP templates are disabled");
         }
         if (!$source->exists) {
-            if ($_template->parent->_objType == 2) {
+            if (isset($_template->parent) && $_template->parent->_objType == 2) {
                 $parent_resource = " in '{$_template->parent->template_resource}'";
             } else {
                 $parent_resource = '';