hang-up when import project

When I try to import a project, Qt creator is going to hang-up.
I created a simple test program in C, like
int main()

I put it in a directory. The directory holds only one file. Then, I did
New project > Import project > choose...
(I wrote project name and directed the location)
next>
(file tree in the directory was shown)
next>
("project management" was shown as well as the message,
"files to be added in
c:\the directoy of the hello program
hello.config
hello.creator
hello.files
hello.include"
I clicked Finish button, but, at that moment, QT creator hanged-up.