[TYPO3-extbase-kickstarter] load and save don't work

[mario chiari]

hi

for some reason, Load and Save button do not work any more.
Load does not load any more. 

If I try to save a new ext, the new extension is indeed saved, but the
pop up does not close itself. Firebug console shows a bunch of errors,
in particular:

p is undefined
(function(){var
h=Ext.util,k=Ext.each,...lclick",this.onNodeDblClick,this)}});
ext-all.js (line 7).

any idea?
thanks 
mario