On ubuntu, cant creat a new project in an empty folder, why?

So Im a new user, and installed sucessfully unity 4.1.
I want to create a ‘‘new project’’
i tried import the following and click ‘‘create’’ and i get ‘‘specified path is not valid [should be a non existing or empty dictrectory’’
so i coulnt make a new folder so i created an empty one and clicked ‘‘browse…’’ went to ‘‘desktop’’ to ‘‘unity games’’ [empty folder]
at the bottom [where it says file name:____ ] suddenly got typed unity games but i still couldn’t opened it
why?

The editor isn’t supported on Linux/Wine/wild VMs/etc.

You can make games on Windows and OSX which can be built for Linux.