Error: Ckeditor version 3. TypeError: d.innerText is undefined

i've changed forms->dialogs->textfields.js->

items: [
                   [ editor.lang.forms.textfield.typeThousand,   'Thousand' ],
                   [ editor.lang.forms.textfield.typeTugrug,   'Tugrug' ],
                   [ editor.lang.forms.textfield.typeCount,   'Count' ],
                   [ editor.lang.forms.textfield.typeLitr,       'Litr' ],
                   [ editor.lang.forms.textfield.typeTone,       'Tone' ],
                   [ editor.lang.forms.textfield.typeKiloGramm,   'KiloGramm' ],
                   [ editor.lang.forms.textfield.typeGa,       'Ga' ],
                   [ editor.lang.forms.textfield.typePercent,      'Percent' ],
                   [ editor.lang.forms.textfield.typeUSD,          'USD' ]
                   ],

then forms->lang->mn->

textfield: {
       title: 'Текст талбарын шинж чанар',
       name: 'Нэр',
       value: 'Утга',
       charWidth: 'Тэмдэгтын өргөн',
       maxChars: 'Хамгийн их тэмдэгт',
       type: 'Төрөл',
       typeThousand: 'Мянган төгрөг',
       typeTugrug: 'Төгрөг',
       typeCount: 'Ширхэг',
       typeLitr: 'Литр',
       typeTone: 'Тонн',
       typePercent: 'Хувь',
       typeKiloGramm: 'Килограм',
       typeGa: 'Га',
       typeUSD: 'Ам Доллар'
   }

ckeditor.js(line 14050) TypeError: d.innterText is undefined ...

How to fix if?.