can't save new articles and categories

Hi

Two week ago I tryed to make some new articles and categories without success.
Firefox popup an error message indicating problem in some lines at mootools.core and some other mootools.

I made backups and upgrade from 1.7.1 to 2.5.4, for a week ago.. Everything work good until yesterday. New articles and new categories are not in the lists of the articles or categories When I press the save buttons I wait long time to get the screen back to the articles and the categories without showing the new ones or edit theese two locks them without changes..

Firefox and the other browser don't show the popup message longer...

Please help me !!!!

Best Regards

Goran

send link

hi ivan!!!

please tell me which link do you want, and I will send it immediately,

I attach a print screen of the message


Best Regards

Goran
MICROweb

o, that happens in admin panel, consult joomla forum.