I don't know if we are talking about the same issue here, but I had an issue a few months ago when I upgraded to the latest on all packages. The issue was related to admin.TabularInline. Here is the solution I have implemented:
diff --git a/satchmo/apps/product/admin.py b/satchmo/apps/product/admin.py
--- a/satchmo/apps/product/admin.py
+++ b/satchmo/apps/product/admin.py
@@ -94,7 +94,7 @@
class Price_Inline(admin.TabularInline):
model = Price
- extra = 2
+ extra = 0
class ProductImage_Inline(admin.StackedInline):
model = ProductImage
Hope it helps.