Sprout Forms file upload Any thoughts why a Sprout Form is not saving a form submission that contains a file. 

Not throwing any errors and on submission the user is returned to the form. 

This is a local build - I thought it might be a permissions issue with the file upload but nothing in logs, which seem to suggest that the entry/submission is being saved (event is valid, element saved).

However, nothing is being saved in the back-end and the file is not being uploaded to the allotted directory.

Confused - any help appreciated.
For the record, the issue, as determined from the comments above was that the Asset field settings did not allow the type of file that was being uploaded.

Updating the Asset field settings to allow the uploaded file type solved the issue.