Hotmail won't let me open ONE email


New Email
It's only one email that's not opening, and it has an attachment; it's from a Film School that I applied to, so I know who it is and it's extremely important that I read it soon!

This is what's read after I try opening the email:
"Windows Live Hotmail wasn't able to complete this request. Microsoft may contact you about any issues you report."

If someone could please tell me what to do, I'd be grateful!