Snapshot：
When using the 'Flat File Source' and 'OLE DB Destination' or something else components to load some data through the components. Maybe we will have the error like that.
Mismatched locale IDs. The component locale ID (2052) does not match the connection manager locale ID (2057)
Reason:
Maybe there are have the different kind of LocaleID.
When you establish the SSIS programme in you local PC, finally you much have to deploy your SSIS package to the LIVE server, but sometime you have no idea there have different locale configure. So, you have to make sure the input and output is the same thing.
Solution:
Make sure the LocaleID is the same configure as below:
Thanks.