データベースの要素を1つ追加しただけで、アプリが動かなくなりました、、、

データベース（realm）を利用して試合結果記録アプリを作成しております。
一度作り、正常にアプリが起動することを確認したのちにデータベースの要素を追加しようと思った時です。

データベースの要素（変数）を1つ追加で宣言しただけ（利用していない）でコンパイルはできるがアプリが起動したとたんに終了するようになりました。
原因に心当たりのある方はいませんか？

Result.kt

package com.example.user1.myapplication5

import io.realm.RealmObject
import io.realm.annotations.PrimaryKey
import java.util.Date

open class Result : RealmObject(){
    @PrimaryKey
    var id: Long = 0
    var title: Date = Date()
    var MyResult: String = ""
    var YourResult: String = ""
    var MyName: String = ""
    var YourName: String = ""
    var MySet: Int = 0
    var YourSet: Int = 0
    var MySet1: Int = 0　//追加した要素

参考までに他の部分のコードも載せておきます。

MainActivity.kt

package com.example.user1.myapplication5

import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import io.realm.Realm
import io.realm.kotlin.where
import kotlinx.android.synthetic.main.activity_main.*
import org.jetbrains.anko.startActivity

class MainActivity : AppCompatActivity() {
    private lateinit var realm: Realm

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        realm = Realm.getDefaultInstance()


        listview.setOnItemClickListener{ parent, _, position, id ->
            val result = parent.getItemAtPosition(position) as Result
            startActivity<EditActivity>("result_id" to result.id)
        }


        val results = realm.where<Result>().findAll()
        listview.adapter = ResultAdapter(results)

        button.setOnClickListener { view ->
            startActivity<EditActivity>()
        }

    }

    override fun onDestroy() {
        super.onDestroy()
        realm.close()
    }


}

EditActivity.kt

package com.example.user1.myapplication5

import android.annotation.SuppressLint
import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import io.realm.Realm
import io.realm.kotlin.createObject
import io.realm.kotlin.where
import kotlinx.android.synthetic.main.activity_edit.*
import org.jetbrains.anko.alert
import org.jetbrains.anko.startActivity
import org.jetbrains.anko.yesButton
import java.text.ParseException
import java.text.SimpleDateFormat
import java.util.*

class EditActivity : AppCompatActivity() {
    private lateinit var realm: Realm

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_edit)
        realm = Realm.getDefaultInstance()

        RETURN.setOnClickListener { view ->
            startActivity<MainActivity>()
        }

        val resultId = intent?.getLongExtra("result_id", -1L)

        if (resultId != -1L){
            val result = realm.where<Result>().equalTo("id",resultId).findFirst()
            DateEdit.setText(android.text.format.DateFormat.format("yyyy/MM/dd",result?.title))
            MyResultEdit.setText(result?.MyResult)
            YourResultEdit.setText(result?.YourResult)
            MyNameEdit.setText(result?.MyName)
            YourNameEdit.setText(result?.YourName)
            MySetEdit.setText(result?.MySet.toString())
            YourSetEdit.setText(result?.YourSet.toString())




        }

        DELETE.setOnClickListener{
            realm.executeTransaction {
                realm.where<Result>().equalTo("id", resultId)?.findFirst()?.deleteFromRealm()
            }

            alert("削除しました"){
                yesButton { finish() }
            }.show()
        }



        SAVE.setOnClickListener {
            when(resultId) {
                -1L -> {


                    realm.executeTransaction {
                        val maxId = realm.where<Result>().max("id")
                        val nextId = (maxId?.toLong() ?: 0L) + 1
                        val result = realm.createObject<Result>(nextId)
                        DateEdit.text.toString().toDate("yyyy/MM/dd")?.let {
                            result.title = it
                        }

                        result.MyResult = MyResultEdit.text.toString()
                        result.YourResult = YourResultEdit.text.toString()
                        result.MyName = MyNameEdit.text.toString()
                        result.YourName = YourNameEdit.text.toString()
                        result.MySet = MySetEdit.text.toString().toInt()
                        result.YourSet = YourSetEdit.text.toString().toInt()




                    }

                    alert("追加しました") {
                        yesButton { finish() }
                    }.show()

                }

                else -> {
                    realm.executeTransaction{
                        val result = realm.where<Result>().equalTo("id", resultId).findFirst()
                        DateEdit.text.toString().toDate("yyyy/MM/dd")?.let {
                            result?.title = it
                        }
                        result?.MyResult = MyResultEdit.text.toString()
                        result?.YourResult = YourResultEdit.text.toString()
                        result?.MyName = MyNameEdit.text.toString()
                        result?.YourName = YourNameEdit.text.toString()
                        result?.MySet = MySetEdit.text.toString().toInt()
                        result?.YourSet = YourSetEdit.text.toString().toInt()




                    }
                    alert ("追加しました"){
                        yesButton { finish() }
                    }.show()
                }
            }
        }
    }

    override fun onDestroy() {
        super.onDestroy()
        realm.close()
    }

    @SuppressLint("SimpleDateFormat")
    private fun String.toDate(pattern: String = "yyyy/MM/dd HH:mm") : Date?{
        val rtFormat = try {
            SimpleDateFormat(pattern)
        } catch (e: IllegalArgumentException){
            null
        }

        val date = rtFormat?.let {
            try {
                it.parse(this)

        } catch (e: ParseException){
                null
            }

        }
        return date

    }


}

ResultAdapter

package com.example.user1.myapplication5

import android.content.Context
import android.text.format.DateFormat
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.TextView
import io.realm.OrderedRealmCollection
import io.realm.RealmBaseAdapter

open class ResultAdapter(data: OrderedRealmCollection<Result>?) :
        RealmBaseAdapter<Result>(data) {


    class ViewHolder(val dateView: TextView, val myresultView: TextView,  val mysetView: TextView,
                           val yoursetView: TextView, val mynameView: TextView, val yournameView: TextView)


    override fun getView(position: Int, convertView: View?, parent: ViewGroup?): View? {

        var viewHolder : ViewHolder?
        var view = convertView

        if (view == null) {

            val inflater = LayoutInflater.from(parent?.context)

            view = inflater!!.inflate(R.layout.list_item, parent, false)

            viewHolder = ViewHolder(
                    view.findViewById(R.id.DateText),
                    view.findViewById(R.id.MyResultText),
                    view.findViewById(R.id.MySetText),
                    view.findViewById(R.id.YourSetText),
                    view.findViewById(R.id.MyNameText),
                    view.findViewById(R.id.YourNameText)


            )

            view.tag = viewHolder
        } else {
            view = convertView
            viewHolder = view?.tag as ViewHolder
        }

        adapterData?.run {

        val listItem = getItem(position)
        viewHolder.dateView.text = DateFormat.format("yyyy/MM/dd" , listItem?.title)
        viewHolder.mynameView.text = listItem?.MyName
        viewHolder.yournameView.text = listItem?.YourName
        viewHolder.myresultView.text = listItem?.MyResult
        viewHolder.mysetView.text = listItem?.MySet.toString()
        viewHolder.yoursetView.text = listItem?.YourSet.toString()

        }

        return view
    }
}

よろしくお願いします！！