"Ext is not defined" JS Error on Edit Store

[Joomla-Israel]

VM 1.1.0 Stable
J1.5.3
IE7, FF2

JS error "Ext is not defined" appears in Admin panel on Edit Store page when clicking on Cancel button

[aravot]

Thank you, Cancel button is not working in most places http://dev.virtuemart.net/cb/issue/2056

[Oliver Griffiths]

Any development on this front? Still not able to use cancel buttons in standard layout?

Thanks

Oli

[abenlahsen]

Hi,
I have the same problem, I do this http://dev.virtuemart.net/cb/issue/2056 but still the same error in "Add Country" & "Module Information" views!
Thanks.