Ok, so, sometimes folder can be hidden, and sometimes I get an error...I use Windows 8.1, and UAC is completely disabled from registry also. I didn't had those kind of problems with the previous releases on the same system. Only sometimes, but rarely.
And second...I see that you really enhanced filter function, because now I cannot see files in folder "..." under WinRAR...BUT, now, that folder can be deleted, along with all hidden files...can this be protected somehow?