I've read the instructions a zillion times. Please help me decipher the following error:
Fatal error: Call to undefined function ImageCreateFrompng() in public_html/wp-content/mu-plugins/avatars.php on line 883
This happens after the picture is uploaded and is prepared to be cropped.
The picture isn't loaded and the default avatar hasn't changed. BTW: The default avatar is a gravatar.
Latest builds for BP and WPMU (2.8.3)