What steps will reproduce the problem?

1. Include query.jstore.js script on a page and call jStore.init() without engine specified => html5 engine is selected in Opera (in my case)
2. Opera shows 'Out of memory; script terminated.' in Error Console and jStore in non-functional

What is the expected output? What do you see instead?

What version of the product are you using? On what operating system?

jStore 2.0 / Opera 10.53 (build 3374) / Windows XP

Please provide any additional information below.

Patch attached fixed the issue for me.