I had an 11 million row CSV file that had a small number of rows where the delimiters were wrongly set for some reason. I got the error:
[Tx File [1]] Error: The column delimiter for column [X] was not found.
I couldn't get SSIS to send these rows elsewehere during the load because (I'm guessing) the lack of delimiter meant that it couldn't skip onto the next row.
In the end I imported it to an old instance of SQL 2000 which is a lot more forgiving and then transferred it and began investigating and cleaning from there.
regards, Matt