diff --git a/pandora/archive/management/commands/import_streams.py b/pandora/archive/management/commands/import_streams.py
index 25650c0e..0b5a1a4f 100644
--- a/pandora/archive/management/commands/import_streams.py
+++ b/pandora/archive/management/commands/import_streams.py
@@ -53,4 +53,5 @@ class Command(BaseCommand):
             s.file.selected = True
             s.file.save()
             s.file.item.update_timeline()
-
+            #make sure all derivatives exist
+            s.extract_derivatives()