As you go along your journey, things will occasionally go wrong, this is inevitable and is nothing to be afraid or ashamed of. There may be situations that you didn't foresee, or steps in the existing process that were not picked up during the elephant exposure. It might be as simple as a problem within the chosen toolset, which isn't doing what you had hoped it would or is simply buggy.
Your natural reaction may be to hide such failures or at least not broadcast the fact that a failure has occurred. This is not a wise thing to do. You and your team are working hard to instill a sense of openness and honesty, so the worst thing you can do is the exact opposite. Think back to what we covered previously in relation to failing fast in terms of finding defects; the same approach works here as well.
Admitting defeat, curling up in a fetal position...