Hi everyone.
I've some problems in creating a .deb using TNIGa's nice guide.

First of all, X-Term gave me some errors regarding bad permissions, but I've solved it manually changing permissions to some files.
Now it's giving me another error.
It says:

tar: unrecognized option "--format=gnu"

and then, after explaining the correct usage of tar, it says

dpkg-deb: subprocess tar -cf returned error exit status 1

What can I do?