it first happened when i tried to edit an ecart object.
what i then did was to delete the ecart object and add a new column whilst creating the instance, and I get the same error.
as soon as i start to type into the name field, I get the error, so i cannot create a new ecart instance other than the default
I actually get 2 errors, an onblur error, followed by an onchange error, as shown above, same line number