Not sure if this has been posted or if Test Center is the same as the Live Server in regards to this issue, but here goes: Using a Valorite Runic Hammer, 5 times out of 35 attempts I received an odd combination of messages. I would get the gump asking if I would like to affix my Maker's Mark to an exceptional quality item. I would click Yes for my vanity. Then I would get the message that I failed to craft the item and my materials were lost. The item would not appear in my backpack. I was able to craft exceptional items still, but sometimes there would be that weird sequence that I mentioned above.
Update: It seems to only happen when "Prompt for Mark" is selected in the Blacksmithing Menu. Can anyone else confirm this?
Update: Happens with Verite Hammers, also. Update2: Happens with Agapite Hammers, also. ...looking like its all of them at this point. Update3: Happens with Gold Hammers, also.