Hi afennani,
Please try the way below to disable the flash upload mode.
1. Open the controller file, find the uploader control section
2. Use the code below to disable the flash upload mode
using (CuteWebUI.MvcUploader uploader = new CuteWebUI.MvcUploader(System.Web.HttpContext.Current))
{
uploader.SetAdvancedOption(CuteWebUI.UploaderAdvancedOption.NoFlash, "true");
}
3. Try it again, you can use the mouse right click on the uploader button. if have not get the flash context menu, that means the code work.
Regards,
Ken