SSIS mysterious error

Question

I got only these 2 errors when converting flat files to database tables. The dataflow seems to work for other flat files with the same layout so I don't understand where these errors could come from.

[Flat File Source [204]] Error: An error occurred while skipping data rows.

[SSIS.Pipeline] Error: SSIS Error Code DTS_E_PRIMEOUTPUTFAILED.  
The PrimeOutput method on Flat File Source returned error code 0xC0202091.  
The component returned a failure code when the pipeline engine called 
PrimeOutput(). The meaning of the failure code is defined by the component, 
but the error is fatal and the pipeline stopped executing.  There may be 
error messages posted before this with more information about the failure.

Answer 1

Ah i found it... files were older and had some columns missing in the header..........

Answer 2

I agree with the answer above "files were older and had some columns missing in the header" (and I upvoted this answer). I just had the same error, and after investigation it was because the external flat file had a column missing, compared to the columns expected by the flat file connection manager. In essence, the SSIS error "An error occurred while skipping data rows" should be interpreted as meaning "Check the actual columns in the flat file source match the columns defined in its connection manager".