1.3.9h all was working fine until recently. When a customer proceeds to checkout, IE throws a 'Recovered Tab' and wan't to send the error report.

I updated FEC recently and not sure if this is when it started. The error from FireFox is the following if anyone can help?

Site URL can be supplied but temp. turned off FEC for tonight. Could this be a .js problem?

<body id="loginBody" onload="update_zone(document.create_account); update_zone_shipping(document.create_account);" onunload="function onUnload(e) { try { myDump("BEGIN onUnload " + e.originalTarget.location); if (e.target == document) { UnInit(); return; } if (!(e.originalTarget instanceof HTMLDocument)) { return; } notifyTab(e.originalTarget, 1); } catch (ex) { } }">