I suggest "pretending" that your 1.5.1 store is a 1.5.4 one and follow the associated installation instructions.
You'll need to pick up the /ajax.php and /YOUR_TEMPLATE/jscript/jscript_framework.php at a minimum to make sure that the OPC AJAX calls are properly handled.
Many thanks Cindy - I have installed the plugin and all 'looks' good excepting when clicking the 'confirm the order' button nothing happens, there is no action, so I have done something wrong I guess .... the /ajax.php - pardon my ignorance but where should that file be installed? - I have put it in includes/classes/ajax folder (zcAjaxOnePageCheckout.php is in this folder also)
So close and yet so far
cheers,
Mike
@shags38 when she says /ajax.php she means the one that is in the root... That's what the single / means, root... open a 1.5.5e fileset and you will see it sitting there without having to move down through the file tree.
Mike
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1.5.4 DOES have ajax.php in the root...I suggest "pretending" that your 1.5.1 store is a 1.5.4
Mike
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The Zen Cart Forum...Better than a monitor covered with post-it notes!