SSIS Error Code DTS_E_OLEDBERROR. An OLE DB error has occurred. Error code: 0x80004005.
An OLE DB record is available. Source: "Microsoft SQL Server Native Client 10.0" Hresult: 0x80004005 Description: "Invalid character value for cast specification".
[OLE DB Destination [2460]] Error: There was an error with input column "QtyAvail_Fld_24" (2570) on input "OLE DB Destination Input" (2473). The column status returned was: "Conversion failed because the data value overflowed the specified type.".
[SSIS.Pipeline] Error: SSIS Error Code DTS_E_PROCESSINPUTFAILED. The ProcessInput method on component "OLE DB Destination" (2460) failed with error code 0xC0209029 while processing input "OLE DB Destination Input" (2473). The identified component returned an error from the ProcessInput method. The error is specific to the component, but the error is fatal and will cause the Data Flow task to stop running. There may be error messages posted before this with more information about the failure.
[Source for GetFile [1]] Error: The attempt to add a row to the Data Flow task buffer failed with error code 0xC0047020.
Resolution:
The issue was that the QtyAvail_Fld_24 in my Destination (a SQL DB table), was a Smallint data type, while the source value (a Flat File), had overflowed that.
I had to empty the destination table (backed up the data), then dropped and re-created the destination table (changed the data type to Varchar (to match the source).