I've just set up Silverstripe for my children's school.

http://torbay.school.nz

And now that the site is live, I have just run into a small issue or a big one.

I can't add a existing member from another security group to the administrator group.

I can manually add members fine.

This member is one of the staff and she subscribed to the Newsletter using the Newsletter Module.

When I go to edit her details and select the groups tab and add her to Administrators it saves and says member added. But she does not appear in the list. When I go back into edit member, Administrators has been de-selected.

She needs to be in both groups as she wants to receive the newsletter, but she also is the main website administrator for the school.

Tried this fix in this thread to no avail. http://www.silverstripe.org/general-questions/show/19239

I eagerly look forward to hearing from someone on how to fix this.

Edit: My only workaround for this is to remove her from Newsletters Group and then manaully add her to Adminstrators - and then edit her and also add her to the Newsletter group (mailing list).

So that process might give someone insight as to what is going on with the Adminstrators group - hopefully/