options are disabled copy, paste, delete, and organize objects

HI : for some reason,theoptionsaredisabledcopy, paste, delete, and organize objects(back, front,etc.). As much asI try,I selectan objectin my project,anyimage that Iwant to delete, and does not allowmeto.Andtry reinstalling the program, and still nosuccess.I do not knowwhocould be. Help

Adobe Edge Animate CC V2.0