Thank you, but I don’t see why this should be an issue, especially when it works well, quite quickly, on 2.6.
Possibly an issue with the efficiency of the code?
3.0.1 was only available at the time.
Had to go back to 2.6.
I think this was the error from the logs:
[error] [client 127.0.0.1] PHP Fatal error: Maximum execution time of 30 seconds exceeded in /wp-includes/class-wp-image-editor-imagick.php on line 257, referer: /wp-admin/edit.php?s=agenda+template&post_status=all&post_type=page&action=-1&m=0&paged=1&action2=-1