Be sure to rewrite «standard_html_header» in DTML too. I don't think you can include a ZPT document this way. Blaise

Hi,

I'm trying to figure out how a shopping cart is working in Zope. I've looked at the "Shopping Cart" Example in Zope (2.5.1). The "index_html" is in ZPT language and I rewrite it as a DTML Method/Document. The page seems to work until I push the "Add Items" button, on the next page I get the error message:

Error Type: KeyError Error Value: standard_html_header