FlexiAccess is not showing anything for Frontend Permission

Hi guy's i'cant see anything anymore when i select the Frontend Permission. See picture!

[attachment=0:1g7fh3cp]<!-- ia0 -->frontend permissions.jpg<!-- ia0 -->[/attachment:1g7fh3cp]

I've tried Chrome & FireFox. Please Help, i really need to set access to a new categorie i've made.

Thanx.

did you creat a group ?

Yes i did,

The Back end shows all groups good. It used to work well because it's already working. But because i've created a new categorie i need to add that to a existing group.

do you desactived mootools plugin upgrade ?
clean cache and expired cache
deconnect reconnect

Hi Micker,

Yes,

i've tried that see below, but no result!

[attachment=2:1pzzvzco]<!-- ia2 -->mootools.jpg<!-- ia2 -->[/attachment:1pzzvzco]
[attachment=1:1pzzvzco]<!-- ia1 -->cach manager.jpg<!-- ia1 -->[/attachment:1pzzvzco]
[attachment=0]purge cache.jpg[/attachment

Any other thoughts?
Thanx for your efforts so far!