FYI its possible that kill counter has something to do with the crashes. I was crashing really frequently, disabled kill counter and the number of crashes went down. It did not stop entirely but it did seem that the add-on was contributing to it. This tip was given to me by a few other players.
Lost 2 coldfire ballistas. One was being used, one in inventory...meaning if I had 10 in my inv....all of them would have been deleted Not a good sign.
Since there are multiple discussions ongoing about crashes while in combat, we will be closing this thread. We are currently investigating this issue which is affecting both PC-EU and PC-NA servers. You can continue the discussion in the thread linked below.