Support Drupal 7.20
If you upgrade Drupal to version 7.20 — add to end settings.php next line:
$conf['image_allow_insecure_derivatives'] = TRUE;
otherwise the previously uploaded pictures may not be displayed. Read more in Drupal 7.20 release notes.
Development release.
Fixed an issue with leaving directory handles that caused race conditions while attempting to run tests and most likely caused other issues as well.
#1246230 Error when replying to forum topic. patch by nonsie.