Finally got to the bottom of it, it was a permission issue on the server. Just had to chmod -R a few directories.
In the latest error I can see that a call was never made to ajax get-thumbnail-info
In your themes functions.php add the lines
define( ‘USER_AVATAR_FULL_WIDTH’, 300 );
define( ‘USER_AVATAR_FULL_HEIGHT’, 300 );
Then in the people list settings click template info and enter a user picture size.
User Picture size: 300 px the size of the image that is created when %thumbnail% is called in the template.
