Heya...
Sadly I've never been able to get the mass email function to work. I've been round and round with Rick. But otherwise... it's frustrating. It seems to re-start and loop itslef.... some people get 6 emails, others none.
Here is a thread where Dave_L gave some direction to how to add loggin to the email function. This let me see what steps it was doing etc....
You also might try... adding
set_time_limit(0);
to the top of the dosendemail script. Your screen shot seems to make me think that maybe it timed out. <shrug>
I wish I knew the answer. I just got done trying to get an email to everyone at my site... and gave up.

