Http cache control query string broken with update to Drupal 7.20

Drupal 7.20 introduced a new security token on image URLs to prevent against DOS attacks. After updating to Drupal 7.20+, the http cache control query string created by Manual Crop no longer functions. The new query string prevents Manual Crop from correctly retrieving image information from the {file_managed} table because the URI in the table doesn't contain the query string, but Manual Crop does not remove it before querying the database.