Email members bugs

[Scarface Claw]

Sorry if this is the wrong place to report possible bugs, but ive searched for 20 minutes and can find no better place.

Mass emailing members seems not to be working for me.

When I try to send an email to all my members it starts as normal listing the member number the member name and the email sent notification. But once I get about 15 members down (always on the same member) the script stops and refuses to restart.

If I check the radio box to test email (do not send) the display box starts an infinite loop of refreshing the display box without ever displaying anything more than a white screen.

This is in vers 3.7.1

Am I doing something wrong?

This feature seemed to work perfectly in previous versions.

EDIT:
Sorry seems to be working now, but i could only get it to work by emailing each individual usergroup, mixing the usergroups seemed to cause the above problems.