[Unity+Ubuntu] i'm creating a new project folder and the button create is disabled

I'm using unity3d on ubuntu linux.

Installing with the winetricks and playonlinux

on create new project
show me this message error
Specified path is not valid (should be a name of non existing or empty directory).

i'm creating a new folder and the button create is disabled.

Help me ?

 

This problem was solved by installing ie6.
Now has another, nothing appears in the program.
Only the top menu.