I checked the error logs from the server, it seemed that memory_limit in php was 129 and i got a fatal error there.
But before i got the error also and i never got this error.
I put all the files on 755 and groups are correct.
I am just worried when i disable te afrux/news widget, i cant since it is connected with the widget bundel, i enabled and disabled it, when the first times occired to get this error message.
I also found that my disk didnt have anough writing space. I deleted many files and maybe the reason could be that the cache didnt have space to write.
Well, suddenly i dont have this issue anymore. You are referring to FoF Formatting right?