I have a group of elected officials that I regularly email with updates. When I try to contact them, I get the error "Email will NOT be sent to 4 contacts - (no email address on file, or communication preferences specify DO NOT EMAIL, or contact is deceased)." However, when I search for contacts matching one or more of those flags + belong to the group I get no results. I figured out which four contacts it is, and there is an email on their profile, the email is not being held, the DO NOT EMAIL box is not checked, and the contact is not marked deceased.
Is there something else I may be missing? It's pretty important to us to get our messaging to these officials as they hold serious sway over our operations.

This is occurring when viewing the group and clicking "send email to contacts," I have not checked the mass mailing tool.

I'm using civi 4.6.9 on Wordpress 4.1