Visual Studio - On publish error: "the url http://0 is invalid"

One of our developers is unable to publish a web application via the File System on his machine. The error is

"the url http://0 is invalid"

I don't see anything obvious in the project properties in visual studio. Any ideas what would cause开发者_如何学JAVA this?

I am able to publish to the same location. We both have administrative rights to the machine.

I had the same exact issue. The problem was the leading white space in the Target Path value of Publish Web dialog