Show cause of the error when fixture can't not be loaded

When a fixture can't be loaded, you only get a generic error telling you which fixture can't be loaded, it would be more helpful if in that message we get the cause of the error

framework/test/CDbFixtureManager.php

@@ -173,7 +173,7 @@ public function loadFixture($tableName)
 			try {
 				$builder->createInsertCommand($table,$row)->execute();
 			} catch (CException $e) {
-				throw new CException('Exception loading row ' . $alias . ' in fixture ' . $fileName, $e->getCode(), $e);
+				throw new CException('Exception loading row ' . $alias . ' in fixture ' . $fileName . ', Error: ' . $e->getMessage(), $e->getCode(), $e);
 			}
 			$primaryKey=$table->primaryKey;
 			if($table->sequenceName!==null)
@@ -366,4 +366,4 @@ public function getRecord($name,$alias)
 		else
 			return false;
 	}
-}
+}