Joomla 1.6 - Select Button - Javascript Error

It seems to be a new bug with joomal 1.6... If you try to load a popup dynamically with the code SqueezeBox.fromElement(this); it throws that error...That's shouldn't be the case since it's the standard way of loading popups dynamically with the modal library of mootools.
Not sure if we can fix that on our end.
For the "parent category" popup, no problem, we can just remove it and use the standard way of loading popups.
But for the associated modules popup, the link URL is changed dynamically and thus needs to be loaded dynamically.

After some digging,

It seems that by changing the code:
SqueezeBox.fromElement(this);
to:
SqueezeBox.fromElement(this,{parse:'rel'});
It works for both joomla 1.5 and joomla 1.6

Could you confirm that on your end by editing the file adminsitrator/components/com_hikashop/views/menus/tmpl/form.php and doing that change ?
For us, that did the job.