Exports that use the non-default export options result in an empty alert (instead of the 'Data export was successful!' alert), possibly due to a bug fix in REDCap 13.7.17:
Bug fix: Several different features in REDCap, in which an AJAX call returns JSON-encoded data, might get misinterpreted and thus would fail because the request failed to have the "Content-Type: application/json" header set. This would only occur for certain web server configurations. (Ticket #214401)
I will prepare a pull request with a fix for this bug.
Exports that use the non-default export options result in an empty alert (instead of the 'Data export was successful!' alert), possibly due to a bug fix in REDCap 13.7.17:
I will prepare a pull request with a fix for this bug.