XF 1.5 Where does the text for this message come from?

I'm looking for the source of this pop up error's text:


Looking through the PHP and the Phrases from the site I'm coming up short.

For some reason, this pop up is using webmaster@forum.fractalaudio.com as the contact information for the site. This is not what's set in the Options > Basic Board Information page for contact information. I need to fix it, that's not a legit email address any human looks at.