I have managed to get some of them working. I am still having problems with the shoutbox - I can get it so it is visable on the site but anything you type in doesnt appear in the shoutbox window.
The gallery will install ok but when you click the icon it takes you to a blank screen.
The chatroom automatically kicks you out when you type something in.
These are all modules downloaded from this site so I imagine they are all suitable & are not corrupt.