missing processor

Hello,

I hope somebody can help me! I have a problem with my view. My image field is not longer displayed.
When I edit the view I see the next message "Verwerker defect of ontbreekt" (=dutch, I think the translation is: "Processor failed or is missing").
I create the image field long ago and I don't know the processor. Therefor I looked in the database (view_display table) and found the next lines:

"field_image_header";a:34:{s:2:"id";s:18:"field_image_header";s:5:"table";s:29:"field_data_field_image_header";s:5:"field";s:18:"field_image_header";s:12:"relationship";s:4:"none";s:10: "group_type";s:5:"group";s:7:"ui_name";s:0:"";s:5:"label";s:0:"";s:7:"exclude";i:1;s:5:"alter";a:26:{s:10:"alter_text";i:0;s:4:"text";s:0:"";s:9:"make_link";i:0;s:4:"path";s:0:"";s:8:"absolute";i:0;s:8:"external";i:0;s:14:"replace_spaces";i:0;s:9:"path_case";s:4:"none";s:15:"trim_whitespace";i:0;s:3:"alt";s:0:"";s:3:"rel";s:0:"";s:10:"link_class";s:0:"";s:6:"prefix";s:0:"";s:6:"suffix";s:0:"";s:6:"target";s:0:"";s:5:"nl2br";i:0;s:10:"max_length";s:0:"";s:13:"word_boundary";i:1;s:8:"ellipsis";i:1;s:9:"more_link";i:0;s:14:"more_link_text";s:0:"";s:14:"more_link_path";s:0:"";s:10:"strip_tags";i:0;s:4:"trim";i:0;s:13:"preserve_tags";s:0:"";s:4:"html";i:0;}s:12:"element_type";s:0:"";s:13:"element_class";s:0:"";s:18:"element_label_type";s:0:"";s:19:"element_label_class";s:0:"";s:19:"element_label_colon";b:0;s:20:"element_wrapper_type";s:0:"";s:21:"element_wrapper_class";s:0:"";s:23:"element_default_classes";i:1;s:5:"empty";s:0:"";s:10:"hide_empty";i:0;s:10:"empty_zero";i:0;s:16:"hide_alter_empty";i:1;s:17:"click_sort_column";s:3:"fid";s:4:"type";s: 5:"image"; s:8:"settings";a:2:{s:11:"image_style";s:22:"projectfoto-uitgelicht";s:10:"image_link";s:0:"";}s:12:"group_column";s:0:"";s:13:"group_columns";a:0:{}s:10:"group_rows";b:1;s:11:"delta_limit";s:3:"all";s:12:"delta_offset";i:0;s:14:"delta_reversed";b:0;s:16:"delta_first_last";b:0;s:10:"multi_type";s:9:"separator";s:9:"separator";s:2:", ";s:17:"field_api_classes";i:0;}s:16:

I think that the image_style is the Processor.

s: 5:"image"; s:8:"settings";a:2:{s:11:"image_style";s:22:"projectfoto-uitgelicht";s:10:"image_link";s:0:"";}

But the image_style is okay. It still exists.

Sorry for my english I hope somebody can help me....

NitraM