Can't type anything after the permission denied message? That sounds very odd. Or did you mean after using sudo? If the latter, using sudo prompts you for your password, which isn't printed on the screen for obvious safety reasons.
Since it actually prints nothing (not even *'s, so anyone else watching over your shoulder can't figure out how long your password is) on the screen when you're typing in your password, it might seem like you're unable to type anything, but once you've typed your password and press enter, it continues doing its job, granted your password was correct.
This isn't a forum read actively by programmers, at least not in the role of fixing things reported broken here. If you want to file a bug report, you should go to Launchpad instead.
This forum simply consists of helpful people who spend some of their free time helping others to get things working, none of whom (as a rule of thumb, of course they might be some exceptions) has any official ties to Linux, Ubuntu or the packages used in it. To have a solved tag in this thread simply means that since this is a guide, it isn't a problem left unsolved.
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