Drupal 6 upgrade

Hi,

Sorry if this is a duplicate I have not seen it if it is!). I have just upgraded from Drpal 5 to 6. Have upgraded all associated modules, etc. done all the usual updates, etc. However, the pages that I was using insert_view on no longer work.

1. I have a input format using the insert_view
2. I have a node that uses [vew:mu_view]
3. All that is displayed is [view:my_view] and not the view.

I have tried re-arranging the order of the filters, have tried re-creating the node and link, but get the same problem. Not sure if this is a problem with insert_view or views.

I would be grteful for any advice.
Nick