Access denied

I just found that my site was returning blank white pages with this module installed once I upgraded to drupal 5.3 from drupal 5.0!!

Took me a while to trace the error but here's what the server was recording as the error:

Fatal error: Cannot use object of type stdClass as array in /usr/local/www/apache22/data/sites/all/modules/formtweaker/formtweaker.module on line 127

q./