About the only way, if you did not have logging on before hand, is to select all of the text, copy it, and paste it into Notepad or something similar. If it has already scrolled off your client, then the best you can do is ask whoever you were playing with if they have a copy or can save one.
Bydar, a garish-looking trader says, "I'm not a man, I'm an experience."
One possible solution for that is to have it prompt you for a save location when you first click it, and have the file stream autoflush enabled. That way if the client crashes for any reason, you still have your log.
Comments
I'm not familiar with that, unfortunately!