--- a/src/iconolab/management/commands/updatecollection.py	Tue Nov 29 15:19:53 2016 +0100
+++ b/src/iconolab/management/commands/updatecollection.py	Tue Nov 29 15:43:29 2016 +0100
@@ -125,9 +125,10 @@
                 item_metadatas.photo_credits = item_photo_credits
                 item_metadatas.joconde_ref = item_joconde_ref
                 item_metadatas.save()
-                print("### Generating thumbnails for item")
-                for image in item_metadatas.item.images:
+                print('### Generating thumbnails for item '+item['INV'])
+                for image in item_metadatas.item.images.all():
                     for size in settings.PREGENERATE_THUMBNAILS_SIZES:
+                        print('#### Thumbnail for size '+size)
                         get_thumbnail(image.media, size, crop=False)
             print("# All done!")
         except FileNotFoundError:

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/iconolab/migrations/0016_itemmetadata_field.py	Tue Nov 29 15:43:29 2016 +0100
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10 on 2016-11-17 10:05
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('iconolab', '0015_auto_20161115_1031'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='itemmetadata',
+            name='field',
+            field=models.CharField(default='', max_length=255),
+        ),
+    ]