Module: ECR v4.0 and above.
Condition: You created custom properties for FileUpload control.
Symptom: Everything works except that the fileupload is not getting file saved.

Reason: ASP.NET Ajax is enabled with partial rendering for v4.0 by default. Microsoft ASP.NET Ajax does not support file upload for now.

Solution:

Follow the steps below to disable the ASP.NET Ajax for the control.

It is always recommended to backup your site before any changes.

1. Login as Host Account
2. Go to Host >> Module Definitions
3. Click little pencil to Edit "Events Calendar" module.

4. Under Module Controls, click Edit the first row, the source should be "DesktopModules/EventsCalendar/View.ascx" and the Control name should be empty.
5. Uncheck "Support Partial Rendering", and click Update.

6. Repeat step 4, 5, for "Edit" control. The source should be: "DesktopModules/EventsCalendar/EditEventsCalendar.ascx"

7. After that, click Update Module, it should work now.