final ViewGroup layout6 = (ViewGroup) LayoutInflater.from( Menus.this).inflate( R.layout.beefkabobsandwhichdialog,
Your dialog's content is not set with layout6. You have a second builder6.setView() in there. That is why Android cannot find the EditText's ID. Also, maybe you can have more descriptive variable names. :)
builder6.setView()
EditText