Odd Behaviour When I Load A File Into A Table

Hi all of you,

I've got an issue with a plain file. This file owns (n) rows. Some of them have less information than others.
I mean:

1 2 3 4 enric enric1 enric3
1 2 3 5 enric2
1 2 3 6 enric4
1 2 3 8
1 2 3 9

File is loaded into the table successfully but my DTSX only loads all those rows totally full, the rest ones no. ?¿?¿

1 2 3 4 enric enric1 enric3

I'm stuck with this and at the same time, suppose that it'll be a stupid thing.

Thanks indeed for your time,

Enric