Invalid project path(mac)

I’m using mac(OS X) and cocoscreator v1.6.1.

This seems to be invarid project path.
“Users/firstname.familyname/Documents/NewProject”

In my user account “.” But it’s included, and it isn’t possible to make a project file of cocoscreator.

It isn’t possible to change the user account name by a regulation of a belonging company.

Without changing a user account name, would it be possible to use cocoscreator?