In the page you sent line 60 is:
that does not seam to correspond with the error you are getting.
couple of problems i see though:
1) The recordset is set to filter on the logged in user. the recordset should filter the wishlist table on the logged in users ID
2) in the populate cart from recordset, you have bound the cart columns to the cart columns. . .
it should be using the recordset columns instead.
If you need help setting this up, we can help you though a premiere support appointment: