Fckeditor "paste", "paste as plain text ", "paste from word" not working

i have developed website where i have used fckeditor.

when i tried to paste text by rightclick->paste, popup opens andit keeps loading and loading nothing happens .

i tried by clicking icon at the top of fckeditor but same happens. it is happening for all browsers

i  am attaching scrrenshot of browser error console which shows errors for fckeditor