Using zen cart 1.3.7 with this patch: PPEC-137-patches-March21-2007 FireFox on Mac OS X 10.3.9 gives this woopsie: =0)document.write(unescape('%3C')+'\!-'+'-') //-->
upon reaching this page: https://www.paypal.com/cgi-bin/webscr.
Seems like a PayPal issue, but I'm finding paypal's support site inscrutable so I hope someone here can help.

I'm also having complaints from customers running IE 7 on windows that they can't find a way past the choose payment screen. That one seems like a Zen problem, has anyone else had it?

The above are happening on this site: http://www.yourownbags.com using website payments standard.

On another of my sites, http://www.bamboofabricstore.com/samples.php, I've had a sudden drop off in folks using the paypal buy now button about the same time the other errors appeared. It works fine for me, but the dropoff in sales is very suspicious. This is NOT a zen issue, I mention it only because it reinforces the notion that at least part of the other problems are paypal, not zen.

if any of this has been covered elsewhere, I humbly apologize and welcome a link to the thread or suggestion of search terms. Thanks.