I have this error message, which I know is related to the multiupload_filefield_widget module. If I disable this module, the message disappear.
Notice: Undefined index: preview_image_style in
image_field_widget_process()(line 381 of /Applications/MAMP/htdocs/my-site.com/modules/image/image.field.inc).
I found this issue]2 which mention this message but isn't fixed yet.
How can I solve this?