Don't use 'puts' in rescue in episode.initialize

[tkrajacic]

I think it is very inconvenient to output a string in the rescue clause in episode.initialize

I have overridden this in one of my scripts by setting @air_date to nil instead.
Otherwise there is no way to get rid of this output.

Is there a reason, why @air_date is not just set to nil instead? (This can be tested in a script, in contrast to just living with some garbage output otherwise)

BTW, this happens for shows that have show specials for example, which don't have dates set.