See: http://drupal.stackexchange.com/questions/38455/help-to-solve-this-issue... (I'm not the poster)

If a user sets an image field to use multiupload, and then does not choose an image preview style, Drupal throws an error when using the module.

Notice: Undefined index: preview_image_style in image_field_widget_process() (line 381 de ...../modules/image/image.field.inc).

It's resolved by setting an image preview style, however that's not obvious from the error.
I haven't looked in detail, but I would guess that choosing a default image preview when setting a field to use the multiupload widget type would be a good solution.

Comments

czigor’s picture

czigor commented
Issue summary: View changes
Status: Active » Postponed (maintainer needs more info)

I can't see this. Can you reproduce this on a clean drupal install?