APEX

Hi

I was using apex 3.2 with extjs 2.02 and all worked fine. We have now upgraded Apex to Application Express 4.1.0.00.32 and I am receiving the folowing error:

apex.jQuery is not a function
[Break On This Error] apex.jQuery(document).ready(function(){
f?p=10...25::::: (line 239)
apex.jQuery is undefined
[Break On This Error] )}return this.pushStack(d,a,e.selector...ex.event.gCancelActions=false})}};/*!
apex_4_1.min.js (line 18)


I have searched the forums without much joy. If this was previously posted with a solution can someone point me there. Any assistance will be greatly appreciated.

Thanks in Advance.