diff --git a/Controller/OpauthAppController.php b/Controller/OpauthAppController.php
index e3afd46..5ad9b2e 100644
--- a/Controller/OpauthAppController.php
+++ b/Controller/OpauthAppController.php
@@ -136,6 +136,9 @@ protected function _loadOpauth($config = null, $run = false){
 		}
 		
 		App::import('Vendor', 'Opauth.Opauth/lib/Opauth/Opauth');
+		if (!class_exists('Opauth')) {
+			throw new CakeException('Unable to load Opauth class.  [app/Plugin/Opauth/Vendor/Opauth]  Did you load submodules?');
+		}
 		$this->Opauth = new Opauth( $config, $run );
 	}
-}
\ No newline at end of file
+}