It's impossible to know for sure without seeing the guys model (or your model). However, the -1.#IO entries in the code check are a real red flag. That's means something catastrophic has happened. Some data may be corrupted or is being processed incorrectly. The Pnc = 0 may be the cause of the -1.#IO, or it may be a symptom of problem.
Again, it's impossible to tell without knowing more. Seeing the model would be best.