These are the errors I'm getting. I also did full logging but basically got the same messages at the point of error.

[blah blah blah [1]] Error: The attempt to add a row to the Data Flow task buffer failed with error code 0xC0047020.

Error: The pipeline received a request to cancel and is shutting down.

Error: SSIS Error Code DTS_E_PRIMEOUTPUTFAILED. The PrimeOutput method on component "Whatever" (1) returned error code 0xC02020C4. 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.

Error: SSIS Error Code DTS_E_THREADFAILED. Thread "SourceThread0" has exited with error code 0xC0047038. There may be error messages posted before this with more information on why the thread has exited.