SCH AF 1 quest, Bastok CS

[Gropitou]

I`m trying to do the SCH AF quests. Currently on AF-1 "On Sabbatical".
Managed to get thru the Eld.Nec. CS without any problems, went to Bastok, spoke to Gentle Tiger and initiated the next CS.

At midpoint of the conversation with Nicolaus, there's a screen pause after he says the professor had disappeared before and he was the one who found him, the game crashes and the following message appears:

Terminated as error occured in Final Fatasy XI.
An error occured.
Please reset your console: 414694.

Playing on PS3 (PS2 emulation) with a 15mbs internet connection.

How can such problems still exist in quests that have been around for 2 years ?
How do I get thru this ?

Ran "Check Files": No Problems were found.