[solved] "Fatal error" in the backend

Hi, when I try to modify existing categories I get this message "Fatal error: Cannot access empty property in /home/spass25/public_html/components/com_flexicontent/classes/flexicontent.helper.php on line 3998"...
Till now, I've had no problem. What is going on?

I see the same message in all pages now!

the site is spassolento.it

the problem as to do only with categories and associated menus

Hello

we don't know what is in line 3998

you have not posted your

- FLEXIcontent version/revision
- Joomla version
- PHP version

you always need to post these, especially for such errors

also you should be using
v2.1.3 r1857
or
v2.2.0 r1932

Joomla 3.3.3
Flexicontent v2.2.0 r1932
in that line there is " $langs->{$language->$hash} = $language;"
php 5.3.28