Using multiple jQuery versions problem

I am building control that uses last version of jstree. Problem is that whole system is build using jQuery 1.3.2开发者_JAVA技巧, but i need to use jQuery 1.4.2 for jstree, also to prevent errors need "$" still pointing to jQuery 1.3.2 to make system works normally. I tried to solve problem like this

var jq142 = jQuery.noConflict(true);

And it works, but when i added other control to form like "datepicker" that initialized via $("#id").datepicker it throws error $("#id").datepicker is not a function

When i inspect DOM variables through firebug all is ok - $ is pointing to 1.3.2 and datepicker function is registered.

What it can be?

Thanks

---

in case anyone came to this by looking for unanswered questions, the answer was to simply upgrade to 1.4.*

btw: jQuery 1.7 has just been released... time to upgrade again ;-)