Someone else ran into this recently but I can't seem to dig it out from the forums using search. There was a fix posted for it I believe ... hopefully someone will remember.
Did you enter "notification-test1" as parameter setting somewhere? If yes you might want to check if it contains a leading or trailing space, e.g. if it is "notification-test1 ". Check the same for the group name.
If that turns out to be the reason please file a bug because that shouldn't be possible to happen.