What causes the 'could not download' error?

[blackgold9]

I'm getting "Validation failed: Image could not download file" when attempting to save a model that has a carrierwave uploader. The image is not required. It is being saved to a s3 bucket.

The only place i could find in the carrierwave code that says "could not download file" was:
https://github.com/jnicklas/carrierwave/blob/master/lib/carrierwave/uploader/download.rb#L41

Any ideas what that means?

[bbatsov]

I'm getting the same problem. I think it was introduced in the latest version of CarrierWave.

[bensie]

This commit a95e5da is likely what is causing your issue:

We decided to leave the custom URL parsing up to the developer. Override process_uri in your uploader to customize it.