...ImageSpecFieldFile error

gistfile1.diff

diff --git a/apps-ext/imagekit/models/fields/files.py b/apps-ext/imagekit/models/fields/files.py
index e206377..e98b7d9 100755
--- a/apps-ext/imagekit/models/fields/files.py
+++ b/apps-ext/imagekit/models/fields/files.py
@@ -111,7 +111,9 @@ class ImageSpecFieldFile(ImageFieldFile):
         """
         name = getattr(self, '_name', None)
         if not name:
-            filename = self.source_file.name
+            filename = self.__dict__.get('name')
+            if not filename:
+                filename = self.source_file.name
             new_filename = None
             if filename:
                 cache_to = self.field.cache_to or self._default_cache_to
@@ -121,11 +123,11 @@ class ImageSpecFieldFile(ImageFieldFile):
                             ' specified')
                 if callable(cache_to):
                     suggested_extension = suggest_extension(
-                            self.source_file.name, self.field.generator.format)
+                            filename, self.field.generator.format)
                     new_filename = force_unicode(
                             datetime.datetime.now().strftime(
                             smart_str(cache_to(self.instance,
-                            self.source_file.name, self.attname,
+                            filename, self.attname,
                             suggested_extension))))
                 else:
                     dir_name = os.path.normpath(
@@ -143,7 +145,7 @@ class ImageSpecFieldFile(ImageFieldFile):
         # to allow anybody to set the name, but ``File.__init__`` (which is
         # called by ``ImageSpecFieldFile.__init__``) does, so we have to allow
         # it at least that one time.
-        pass
+        self._name = value
 
 
 class ProcessedImageFieldFile(ImageFieldFile):