Error executing propel-gen diff

[rafa8626]

Fatal error: Class 'Propel' not found in /path/to/propel/generator/lib/util/PropelMigrationManager.php

The reference for Propel.php file is missing in PropelMigrationManager.php.

By adding this after the last require_once will fix it:

require_once dirname(FILE) . '/PropelSQLParser.php'; // Last require_once in class
require_once dirname(dirname(dirname(dirname(FILE)))) . '/runtime/lib/Propel.php';