The upgrade page on my 2.7.3 instances is: https://72c9192a7b87de5fc63a-f9fe2e6be12470a7bff22b7693bc7329.ssl.cf1.rackcdn.com/Ushahidi_Web/ushahidi_2.7.3_2.7.4.zip, but I get a 404 when I go there. If someone could give me a working link I'd appreciate it.