After installing the Ecart update I can no longer add an add a cart button to a page with a recordset on it. I get an error "while executing timer in WA Ecart addtocart.htm a java script error occurred. I can add an add to cart button on a page without a recordset with no error. i deleted the .dat as suggested in other java errors and uninstalled and reinstalled the extension with no success.
Uninstalled 4.5.1 reinstalled 4.5.0 Problem goes away.