You have provided us with no information to figure out your problem. What version of CS6 are you running? 11.0.0? 11.0.1? 11.0.2? What OS? What are your system specs? What's in your comp? What effects have you used? Have you installed any third-party plugins? Have you installed any third-party codecs?
And, most importantly, WHAT IS IN YOUR COMP AT 47-SECONDS IN?
As Szalam says, we need to know a lot more if we're going to help you. Please provide answers to the questions listed here: "FAQ: What information should I provide when asking a question on this forum?"
What the others said - we need much more info. If it crashes at a specific point and this is repeatable, it means that at that point something specific is happening - the footage is damaged, a specific effect kicks in and crashes or whatever...