diff --git a/pandora/document/views.py b/pandora/document/views.py
index 6ffb2ffa0..c2af5b463 100644
--- a/pandora/document/views.py
+++ b/pandora/document/views.py
@@ -359,6 +359,8 @@ def upload(request):
             file.uploading = True
             name, extension = request.POST['filename'].rsplit('.', 1)
             file.extension = extension
+            file.width = -1
+            file.pages = -1
             file.save()
         upload_url = request.build_absolute_uri('/api/upload/document?id=%s' % file.get_id())
         return render_to_json_response({
diff --git a/static/js/documentDialog.js b/static/js/documentDialog.js
index 1705b5ce3..84106fb1d 100644
--- a/static/js/documentDialog.js
+++ b/static/js/documentDialog.js
@@ -19,7 +19,7 @@ pandora.openDocumentDialog = function(options) {
                 operator: '|'
             },
             range: [0, options.ids.length],
-            keys: ['description', 'dimensions', 'extension', 'id', 'name']
+            keys: ['description', 'dimensions', 'extension', 'id', 'name', 'modified']
         }, function(result) {
             var i = 0,
                 documents = Ox.sort(result.data.items, function(item) {
@@ -183,9 +183,9 @@ pandora.ui.documentDialog = function(options) {
                         : [],
                     height: dialogHeight,
                     imageHeight: item.dimensions[1],
-                    imagePreviewURL: pandora.getMediaURL('/documents/' + item.id + '/256p.jpg'),
+                    imagePreviewURL: pandora.getMediaURL('/documents/' + item.id + '/256p.jpg?' + item.modified),
                     imageURL: pandora.getMediaURL('/documents/' + item.id + '/'
-                        + item.name + '.' + item.extension),
+                        + item.name + '.' + item.extension + '?' + item.modified),
                     imageWidth: item.dimensions[0],
                     width: dialogWidth
                 })
diff --git a/static/js/documentsPanel.js b/static/js/documentsPanel.js
index 8a7baee71..b69ffa5df 100644
--- a/static/js/documentsPanel.js
+++ b/static/js/documentsPanel.js
@@ -520,6 +520,7 @@ pandora.ui.documentsPanel = function(options) {
                 $list.bindEventOnce({
                     load: function() {
                         $list.options({selected: files.ids});
+                        selectDocuments();
                     }
                 })
                 .reloadList();
@@ -915,8 +916,9 @@ pandora.ui.documentsPanel = function(options) {
 
     function renderPreview() {
         var selected = $list.options('selected')[0],
+            modified = $list.value(selected, 'modified'),
             size = getPreviewSize(),
-            src = '/documents/' + selected + '/256p.jpg',
+            src = '/documents/' + selected + '/256p.jpg?' + modified,
             $element = Ox.ImageElement({
                 height: size.height,
                 src: src,