Several of the members of Void Crushers can't join group chat.
In IRC I see the following messages:
steveB (~firstname.lastname@example.org) has joined #VoidCrushers
Mode #VoidCrushers +b !~nobody@.xxx.xx.xx.xxxx.co.uk by ChanServ
steveB was booted from #VoidCrushers by ChanServ (You are not permitted to be on this channel.)
This affects at least steveB, HillObserver, mikedressner and Dolichwier