Hi, the problem was resolved by a collegue of mine.
I'll copy here the solution as he described it in an email.
So the problem stems from the default security in Server 2008r2.The original zip file that Gonzalo moved has this attribute (Blocked), which is inherited when unzipped.
By unblocking the zip and then extracting, the attribute is no longer present. I copied these files over top of the web site. I moved the site from being a virtual on the default web site to its own site, and added a user to run the app pool.The binding is for http://.....