Can't publish colleagues ASP.NET web application to a web server

My colleague and I are both using VS 2010 and we have created a web application each. We can both publish our own applications to a ftp (web host's) and it works fine. However, if my colleague send me his solution and I run it locally on my machine it works but when I try to publish it I get promped for password and I enter it (same as I use for my application) but it fails. Same for my colleague if he takes a copy of my solution and tries to publish it. He can publish his own solution though.

What can be the issue here? We know we use the same login and password for the ftp and we can both log on to the ftp with the login and password when using a ftp client. Is there some setting that we need to set to al开发者_如何学Clow other machines than the one the application was developed on to be able to publish projects?

Thanks in advance.

Are you publishing to the same place as your colleague? I know that VS 2010 saves a publish profile (maybe you are using your colleague's profile (some other location), with your password)?