Top bar missing in Qt Creator on Lubuntu on VirtualBox

[tom.abcd]

I have installed QT 5.2 on Lubuntu 13.10 that is running in a VirtualBox VM. When I run Qt Creator it positions itself at the top of the desktop and I do not see the top bar that would have the X to close it.

I also installed QT5.2 on Xubuntu 13.10 running in a Virtual box VM and Qt creator shows correctly for it.
I install both today using the Qt online installer for Linux 32 bit link.

Looking on the what is required for QT page it just shows a 404 error.
http://qt-project.org/doc/qt-5/requirements.html

So any suggestions on what to try next?

Thanks
Tom

[ki John]

This is the correct link for requirements:

"Qt for X11 Requirements":http://qt-project.org/doc/qt-5/linux-requirements.html