Unfortunately the application has stopped android

My application works fine on Android version 2.3.7 but when I run it on Android 4.2 it says that unfortunately the application has stopped

this is my manifest file

<?xml version="1.0" encoding="utf-8"?>


<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.radaee.reader"

    android:versionCode="1"

    android:versionName="1.1" >

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <supports-screens android:largeScreens="true" android:anyDensity="true" android:normalScreens="true" android:smallScreens="true" android:resizeable="true" />
    <application
        android:icon="@drawable/icon"
        android:label="@string/app_name" >
        <activity
            android:name=".SplashScreen"
            android:configChanges="orientation"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".StartApp">
             <intent-filter>
                <action android:name="com.radaee.reader.StartApp" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
      </activity>
    </application>

<uses-sdk android:targetSdkVersion="17" android:minSdkVersion="4" android:maxSdkVersion="17"/>
</manifest>

      

        
        
        
      

    

LogCat:

?:??: W/?(?):   at java.lang.Thread.run(Thread.java:856)
?:??: W/?(?): [ 02-09 13:42:08.241   609:  609 E/StrictMode ]
?:??: W/?(?): null
?:??: W/?(?): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40cd52a8 that was originally bound here
?:??: W/?(?):   at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
?:??: W/?(?):   at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
?:??: W/?(?):   at android.app.ContextImpl.bindService(ContextImpl.java:1418)
?:??: W/?(?):   at android.app.ContextImpl.bindService(ContextImpl.java:1407)
?:??: W/?(?):   at android.content.ContextWrapper.bindService(ContextWrapper.java:473)
?:??: W/?(?):   at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157)
?:??: W/?(?):   at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145)
?:??: W/?(?):   at com.android.emailcommon.service.AccountServiceProxy.getDeviceId(AccountServiceProxy.java:116)
?:??: W/?(?):   at com.android.exchange.ExchangeService.getDeviceId(ExchangeService.java:1249)
?:??: W/?(?):   at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1856)
?:??: W/?(?):   at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551)
?:??: W/?(?):   at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549)
?:??: W/?(?):   at android.os.AsyncTask$2.call(AsyncTask.java:287)
?:??: W/?(?):   at java.util.concurrent.FutureTask.run(FutureTask.java:234)
?:??: W/?(?):   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
?:??: W/?(?):   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
?:??: W/?(?):   at java.lang.Thread.run(Thread.java:856)
?:??: W/?(?): [ 02-09 13:42:08.241   290:  501 W/ActivityManager ]
?:??: W/?(?): Unbind failed: could not find connection for android.os.BinderProxy@415d29b8
?:??: W/?(?): [ 02-09 13:42:21.891   392:  392 W/Trace    ]
?:??: W/?(?): Unexpected value from nativeGetEnabledTags: 0
?:??: W/?(?): [ 02-09 13:42:21.911   392:  392 W/Trace    ]
?:??: W/?(?): Unexpected value from nativeGetEnabledTags: 0

      

        
        
        
      

    

Can anyone tell me how to fix this problem?