Hi Steeved,
What a bummer that you gained. It doesn't sound like you were eating out of line though. Is it possible that you were putting on muscle? I am new to the CAD Forum and so I am not familiar with your situation. I do know that we don't eat nearly the ammount of protein on CAD that we do on Atkins or Neaderthin. It is possible that your body is responding to the extra protein and bulking up your muscles. How do you feel on Neaderthin? Was your energy good? Does the weight feel like water? It does not seem likely to me that it is water weight because of the very low carb nature of that plan. It also seems odd that you would gain if you are only eating a handful of nuts a day with meat and a little fruit. I bet you it's muscle.
Signey