It look like Openoffice has made quite a few changes in the newest version. Some of them being graphical and others being functional. Both of the afforementioned changes I would consider improvements.
There is one change that seems to happen with every version that is very annoying. That is the change of the installer. Every version has the installer change just enough so that if you apply the an older MST and the same setup.xcu to the new installer, like in my previous advice, that things just don't work.
Well the same is true of the new version and it looks like some major changes were written for it. The setup now needs to run completely for things to work.
This is just one of the main reasons Microsoft Office is easier to use.