The requested page could not be found.

Issue Summary

I've used this video module on old sites fine and now trying to use it on new sites and for some reason I'm now getting a " The requested page could not be found" when I try to submit with the "http" prefix and it works without the "http". The old sites that used to work don't now. All the sites are hosted on the same server, do you know of something that would cause this?