The template to display files available for download doesn't work

[Nuttapon]

File >> index.html.erb

When i have uploaded image file success already, my image don't show to preview same before.
I see only the File name and File size. No have image thumbnail

Thanks you

[renius]

This functionality, I think, has been cut down deliberately. Actually it is not really relevant to demonstrate the capabilities of the plugin. Functionality that you are talking about has more to Paperclip. Processing original images to thumbnail can take tens or hundreds of seconds.
In this case, you will see 100% progress bar, and the application will stop and wait until ImageMagiс process your image.