Can't update an item

There is an item in our forums that we can't seem to update any more. It has an official reply, but we need to update that reply and change the status. When we click "reply" we get to the pop-up screen. We can enter text, but when we save, nothing changes. The item is http://featurerequest.wolfware.ncsu.edu/topic/40301-alternate-row-colors-in-file-selector/.