Is your system still working? Adding the extras can make your system un-stable due to a few of the extras bugs not fixed.
The developer stopped working on extras a year ago. So if your system is still working and you want more features go to
MBWE Featurepacks
and use the featurepacks.
The extras were a good idea, but not currently developed. Use the featurepacks that are available and check out my updates at source forge
MBWE Scripts
Let me know how it goes.