I've had this problem before, and I found by placing the block_quickmail.php file in the lang/en folder will fix it.
I've carried out several installations of Moodle and sometimes it works fine, and others it has required this fix.
JM
I've had this problem before, and I found by placing the block_quickmail.php file in the lang/en folder will fix it.
I've carried out several installations of Moodle and sometimes it works fine, and others it has required this fix.
JM